Questions on Algebra: Systems of Linear Equations answered by real tutors!

Tutors Answer Your Questions about Linear-systems (FREE)

Question 323533: solve 3x+31=x-25
Click here to see answer by rfer(12646)

Question 324151: 8x-4y=12 2x-8y=3
Click here to see answer by jim_thompson5910(28476)

Question 324283: At maximum speed an airplane travels 2,460 miles against the wind in 6 hours. Flying with the wind the plane can travel the same distance in 5 hours. What is the speed of the plane with no wind?
Click here to see answer by mananth(12270)

Question 324320: please help me solve this equation: y-2x=-5

Click here to see answer by Alan3354(30970)

Question 324384: Hi! I'm trying to solve this using substitution or elimination:
y=x
y=.10x

Thank you
Click here to see answer by CharlesG2(828)

Question 323383: A farmer has 1200 acres of land on which he grows corn, wheat and soybeans. It costs $45 per acre to grow corn, $60 for wheat, and $50 for soybeans. Because of market demand he will grow twice as many acres of wheat as of corn. He has allocated $63,750 for the cost of growing his crops. How many acres of each crop should he plant?
Click here to see answer by Fombitz(13828)

Question 324718: y = x +7, y= -x +2, determine whether the lines are parallel, perpendicular, neither
Click here to see answer by solver91311(16868)

Question 324854: 12x^2+7=10
-------------
4x
Answer it by using STANDARD FORM, thanks!!!
Click here to see answer by Fombitz(13828)

Question 324985: x + 3y = 8
y= 8
Click here to see answer by Fombitz(13828)

Question 325252: Solve the following system of equations. Please show your work.
x - y = 16
2x + y = 2
Click here to see answer by jim_thompson5910(28476)

Question 325285: How can i solve this system of equation by substitution of -3x-3y=3,y=-5x-7?
Click here to see answer by jim_thompson5910(28476)

Question 325290: pls help me to solve this equation by substitution.
1.-3x+3y=4
-x-2y=11
2.-3x-4y=2
3x+3y=-3
3.-5x-8y=17
2x-7y=-17
Click here to see answer by jim_thompson5910(28476)

Question 325293: help me pls to solve this system of equation by substitution?
-3x+3y=4,-x+y=3
Click here to see answer by jim_thompson5910(28476)

Question 325295: help me pls to solve again this equation by substitution?
-3x-4y=2
3x+3y=-3
Click here to see answer by jim_thompson5910(28476)

Question 325300: i want to ask help from you to please help me solve this system by comparison?
-2x+3y=15,-6x+6y=18
Click here to see answer by jim_thompson5910(28476)

Question 325589: 5x+(4y)+(11x)+8y
Click here to see answer by AAfter Search(61)

Question 325542: HELLO,
I AM STRUGGLING WITH LINEAR PROBLEMS. I DON'T KNOW WHICH SIDE I AM TO SUBTRACT. EXAMPLE: 6X-3Y=9 OR X-4Y=8 OR 4Y=9X-7. THANK YOU, I AM TAKING THIS ALGEBRA A SECOND TIME AND I REALLY WANT TO UNDERSTAND AND PASS THE CLASS.
Click here to see answer by mananth(12270)

Question 325696: solve 8x/4=16
4x16=64 of 16 over 1 x 8x/4
Click here to see answer by stanbon(57226)

Question 326124: 2x+y=6 x-y=6
2x=6 x-6
1x=
Click here to see answer by Fombitz(13828)

Question 326124: 2x+y=6 x-y=6
2x=6 x-6
1x=
Click here to see answer by zoey10123(1)

Question 326145: Is (1, -3) a solution of this system? Please show work..ty
3x-2y=9
4x+y=1
Click here to see answer by solver91311(16868)

Question 326139: Is (1, -3) a solution of this system?
3x-2y=9
4x+y=1
Click here to see answer by Alan3354(30970)

Question 326315: the sum of two integers is 51 . the larger integer is 3 more than twice the smaller integer.find the two numbers...

Click here to see answer by jim_thompson5910(28476)

Question 326411: how would I solve this system of equations:
7x+3y=12
3x+7y=6
I have the solution but could you write out the solution in full with details please?
Click here to see answer by Fombitz(13828)

Question 326820:

This was a division problem already flipped perform

indicated operations and reduce to lowest terms
Click here to see answer by JBarnum(2044)

Question 326827: Having problems solving for x and y on this one. Please help?
Solving by subsitution, either independent, dependent, or inconsistent?
y = -3x + 19 and y = 2x -1
Click here to see answer by tinbar(128)

Question 326857: After leaving a fulfilling career is a math teacher, Phil decides to venture out into the world of DVD sales. The cost of producing x DVD’s is given by the function C(x) = 1.3x + 275. The DVD’s can be sold on E-bay for $10 each.
(a) What are the fixed costs?
(b) Find the revenue and profit functions.
(c) Find the break-even point.
(d) If Phil manages to sell 500 DVD’s per month, what will his yearly profit be?

Click here to see answer by jessica43(140)

Question 327083: Solve with the elimination method
4x + y = 25
3x - y = 20

Click here to see answer by Fombitz(13828)

Question 327101: Which graph has the same intercepts as the equation: 18x - 24y = 72?
Click here to see answer by Fombitz(13828)

Question 327213: Solve by the addition method.
x-y=15
x+y=7
Click here to see answer by Fombitz(13828)

Question 327203: find an equation in standard form of the line:
a. through (2,-2) and (4,4)
b. perpendicular to y=x+5 and through (0,8)
Click here to see answer by Fombitz(13828)

Question 327214: Solve by the addition method:
3x-2y=-1
5x+2y=9
Click here to see answer by Alan3354(30970)

Question 327216: Solve by the addition method:
6x-2y=2
9x-3y=3
Click here to see answer by Alan3354(30970)

Question 327236: solve
4X + Y = 22 , 2X + 3Y = 16

Click here to see answer by Fombitz(13828)

Question 327298: *Determine how many solutions exist
*Use either elimination or substitution to find the solutions (if any)
*Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
y = 2x + 3 and y = -x - 4

Click here to see answer by Fombitz(13828)

Question 327400: write an inequality on the variable x for the degree measure of the smallest ngle of the triangle , given tha the gegree measure ofthe smallest angle is at most 30 degrees.
Click here to see answer by stanbon(57226)

Question 327469: solve by substitution method
6x+7y= -13
-4x+y=37
Click here to see answer by user_dude2008(1861)

Question 327461: solve by elimination method
5x+5y=-11
7x-3y=19
Click here to see answer by user_dude2008(1861)

Question 327468: 4x-9y=14.5
7y-2x=-8.5
Click here to see answer by checkley77(12569)

Question 327467: solve by elimination method
0.3x-0.2y=4
0.2x+0.3y=-37/17
Click here to see answer by checkley77(12569)

Question 327466: solve by elimination method
4x-9y=14.5
7y-2x=-8.5
Click here to see answer by checkley77(12569)

Question 327463: solve by substitution method
4m+n=10
m-4n=11
and
6x+7y=-13
-4x+y=37
Click here to see answer by checkley77(12569)

Question 327016: If you multiply the sale price per box times the number of boxes, that's your total price. But remember, these boxes are on sale. The regular price per box is the same as the number of boxes. Your total price will be 75 times the amount you are saving on each box. When you add the regular price for each box to my sale price for each box, the result is 7 time the amount you are saving on each box. How many boxes are there, and what sale price for each box?

Click here to see answer by ankor@dixie-net.com(15628)

Question 327618: if the lengths of a pair of opposite sides of rectangle were doubled and the other pair of opposite sides were each decreased by 14 meters,the new rectangle would be a square with a perimeter of 84 meters. find the rectangle's original dimension..
Click here to see answer by AAfter Search(61)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845