Questions on Algebra: Expressions involving variables, substitution answered by real tutors!

Algebra -> Algebra -> Expressions-with-variables -> Questions on Algebra: Expressions involving variables, substitution answered by real tutors! Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

Algebra: Expressions involving variables, substitution

Solvers

Lessons

Problems, free tutors

Quiz

In Depth

Tutors Answer Your Questions about Expressions-with-variables (FREE)

Question 236246: x-2x+3=3-x
Click here to see answer by checkley77(6671)

Question 236102: If Chen gives Elyse $5, they will have the same amount of money. If, instead, Elyse gives Chen $5, he will have three times as many dollars as she. How many dollars do they have together?
Click here to see answer by dreaaaa14(1)

Question 235973: Two trucks traveled along the same road one at 420 miles per hour and the other at 516 after how many hours did they reach 4680 miles apart?
Click here to see answer by checkley77(6671)

Question 236018: how do i write 35 less than half of a number is the same as three times the number. what is the number?

Click here to see answer by ankor@dixie-net.com(6567)

Question 235978: i am supposed to identify like terms but i don't understand it my problem is -17-17=6-x you can see that the problem doesn't have like terms. I asked my teacher but she said that i still had to solve it. she told me though in class that it can have 1 answer many answers or no answer please help.
Click here to see answer by ankor@dixie-net.com(6567)

Question 235874: solve for y -8x-8y=-64
8x-8y=-96
Click here to see answer by Alan3354(5863)

Question 235418: What example from my line of work ( catering ) or daily life can be expressed as an inequality with one variable? How do I set up the inequality and solve it.
Click here to see answer by ankor@dixie-net.com(6567)

Question 235808: nadine has 7 more nickels than dealano has dimes if delano gives nadine 4 of his dime then delano will have the same amount of money as nadine how much money do they have together
Click here to see answer by solver91311(4818)

Question 235614: Rewrite the equation so that x is a function of y and then use the result to find x when y =-2
4(5-y)=14x+3
Click here to see answer by checkley77(6671)

Question 235614: Rewrite the equation so that x is a function of y and then use the result to find x when y =-2
4(5-y)=14x+3
Click here to see answer by stanbon(25959)

Question 235672: FInd the slope if it exists, of the line containing a pair of points
(9,3) and (10,-9)
Click here to see answer by checkley77(6671)

Question 235611: I need to rewrite the equation so that y is a function of x but I do not know how to do this with a fraction.
1/4y+3=-5X
This is the answer I have but I am pretty sure it is not right. Could you please explain?
y = -5x/1/4-3/1/4
I think maybe I should multiply the fraction.

Click here to see answer by Theo(547)

Question 235211: trains a andb are traveling in the same direction on parallel tracks. train a is traveling at 80 miles per hour and train b is traveling at 100 miles per hour. train a passes a station at 3:10 pm. If train B passes the same station at 3:22 pm at what time will train b catch up to a.
Click here to see answer by ankor@dixie-net.com(6567)

Question 235321: Translate to an algebraic expression, The product of 33% and some number. Use d to represent some number. The translation is?
Click here to see answer by rfer(2588)

Question 235208: 2x+3y-3=0 (1)
2x+4y-4=0 (2)
solve using sustitution method?
Click here to see answer by MathPro(14)

Question 235223: 50% of what is 40

Click here to see answer by mando271(41)

Question 234967: what is the linear substitution of x+3y=5
-2x+y=4
Click here to see answer by rfer(2588)

Question 234896: p-4 over 5 x= 6q

2y+3x=5

-2x+5y-7=-12

4x+2y= 8x-5

4y-6(x-3) = 28+2x
Click here to see answer by nyc_function(155)

Question 234889: 2x+2y=5
Click here to see answer by nyc_function(155)

Question 234909: i am working on solving problems wit h3 variables. it has been over an hour and can't get a correct answer. it seems easy, but i am having no luck.
if I could see the work to arrive the right answers that would be great. i have the answers in the back of my book.
2x-3y+z=5
x+3y+8z=22
3x-y+2z=12
Click here to see answer by stanbon(25959)

Question 234880: In Isosceles trapezoid ABCD, the longer base, AB, is one and one half as long as the shorter bse, CD. The other two sides, AD and BC are both 13cm long.
If the perimeter is 76cm, find the lengths of AB and CD.
Click here to see answer by Stitch(34)

Question 234295: how do I solve 9(19x-4)=3x
Click here to see answer by Alan3354(5863)

Question 234760: this is my problem. 19+x/2=4 because it's division i dont know how to solve. i dont understand to move the 19 over and move the 4 on the other side of the = sign. please help.
signed
below grade level.

Click here to see answer by Masaries7(2)

Question 234679: find the solution to problem by using system of equations by substitution.
y=2x+7
y=-x-5
Click here to see answer by rfer(2588)

Question 234598: For each of the following, identify the whole-number properties that are illustrated.
(a) 2(3 + 4) = 2(4 + 3)
(b) 5 + 7 = 7 + 5
(c) 1 • 14 = 14 = 14 • 1
(d) 5(9 + 3) = 5 • 9 + 5 • 3
(e) 2 + (3 + 2) = (2 + 3) + 2
(f) 5(3 • 4) = (5 • 3)4
Click here to see answer by solver91311(4818)

Question 234587: simplify:
x^2+3x/x^2-3x-18
what i got so far is
x^2-3x-18
(x-6)(x+3) not sure what to do next
Click here to see answer by mando271(41)

Question 234439: 1/4(60+16s)=15+4s
Solve the equation if possible.
Click here to see answer by Alan3354(5863)

Question 234462: Simplify:
(y-z)/yz - (z-x)/zx - (x-y)/xy
This posted answer is 2(y-z)/yz
But I don't know how this was arrived at.
I keep getting 0/yzx
Appreciate any help.
Click here to see answer by Theo(547)

Question 234457: 5x^2+28xy+15y^2
Click here to see answer by scott8148(3325)

Question 234437: 1/5(10a-15)=3-2a
Solve the equation if possible
Click here to see answer by mando271(41)

Question 233941: Solve the following equation involving fractions and variables
-4/9(2X-4)=48
Please explian how to multiply a fraction when variables are present
-4/9 (2X) -4/9 (-4) = 48
Help me please!
Click here to see answer by ankor@dixie-net.com(6567)

Question 234210: i have a test tomorrow and i'm so confused on questions like these: 3x+7-2x=4x+10 can you please help ASAP!!!!!!!
Click here to see answer by solver91311(4818)

Question 234210: i have a test tomorrow and i'm so confused on questions like these: 3x+7-2x=4x+10 can you please help ASAP!!!!!!!
Click here to see answer by Alan3354(5863)

Question 234039: Cara has 12 more dolls than Mara, Mara has twice the number of dolls as Sara, and
Sara has 15 dolls. How many dolls do the three girls have together?
Click here to see answer by dawny74(8)

Question 233993: Nicole has 20 coins in nickels, dimes, and quarters. She has 6 more quarters than nickels and $3.30 in all. How many nickels does she have? How many dimes? How many quarters?
Click here to see answer by scott8148(3325)

Question 233932: Solve the equation:
The following are fractions and the answer should be -4/3 but I am unable to get this answer

x/4=-x/2-1
Please help!

Click here to see answer by scott8148(3325)

Question 233834: Please help me solve this problem. I would appreciate it very much. In 2003 an algebra student could have calculated thier estimated final grade (g) for that year using the equation g=.35t+50, in which t represents the students combined test grades. If the student had a combined test grade between 82 and 94, what is the final grade of that student?
Click here to see answer by checkley77(6671)

Question 233839: the perimeter of a rectangle is 140m. the length is 4 more than twice the width find the length and width
Click here to see answer by checkley77(6671)

Question 233899: Solve for X
-5=3/8(x-1)

Click here to see answer by stanbon(25959)

Question 233895: Solve for X
Not sure how to solve when you have a variable on each side of the equation
X=2(X-1)+6
I got to the point of X=2X+4 but are not sure what to do next
Click here to see answer by nerdybill(2413)

Question 233893: X/4=-X/2-1
Solve for X

Click here to see answer by rfer(2588)

Question 233897: Solve for X
-5=3/8(x-1)

Click here to see answer by nerdybill(2413)

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