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

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 506413: solving the equation 16x^2-1=0 Click here to see answer by xdragonfight(116)

 Question 506691: Help please! How do I solve by elimination: x-2y = -14 and 3x + 2y = 6 Click here to see answer by jennywecas(28)

 Question 506694: Thanks so much for helping. How do I solve by elimination: y = -3x + 1 and 3x + y = -1 Click here to see answer by jennywecas(28)

 Question 506696: Please help! I have to solve these equations by elimination: #1 2x + 3y = 12 and y = 4/3x -2 #2 y = 1/2 x + 2 and y = 2x -1 Click here to see answer by jennywecas(28)

 Question 506908: Evaluate: x^2-5x+3 for x=-5 Click here to see answer by jim_thompson5910(28593)

 Question 506931: solve system of equation. x+2y+z=4 2x+y-z=-1 x-y-z=-2 Click here to see answer by jim_thompson5910(28593)

 Question 507198: solve the following equations for x and y by elimination 3x + 3y=0 2x - 2y=8 Click here to see answer by jennywecas(28)

 Question 507375: Hi there, This is my question: State how many solutions exist for each set of equations and state whether the lines are consistent or inconsistent and independent or dependent: 1) A)6x-2y=2 9x-3y=1 I have made it this far in solving the problem, but do not get what I am doing wrong: -- 9x-3y=1=>9x=1+3y -- 6x-2y=2 => 15(1+3y)-2y =2 -- 15+45Y-2y=2 -- 43/43y = -13/43 -- Y = ?? I understand that you must use substitution, for example if it were x+y=9 then it would be x=9-y. However I've only ever done it with just a singe Variable. I do not know what to do since this question has a "9x"... do I add the "9x" to the 6x? creating 15x? I hope you understand and see where I went wrong. Thank you in advance for answering my question. Click here to see answer by scott8148(6628)

 Question 507436: Determine the value of k for which the system of linear equations has no solution. 4x - y = -16 16x + ky = 11 Click here to see answer by ankor@dixie-net.com(15649)

 Question 507468: by substitution: 1. y=3x y-x=30 2. x=y 2x+2y=120 Please help meeee. :) Click here to see answer by jim_thompson5910(28593)

 Question 507642: -10=xy+z for x Click here to see answer by Fombitz(13828)

 Question 507422: Pure acid is to be added to a 10% acid solution to obtain 54L of a 20% acid solution. What amount of each should be used? Click here to see answer by ankor@dixie-net.com(15649)

 Question 507933: how do i put 5-y = -3x into standard form (ax+ by= c) Click here to see answer by jim_thompson5910(28593)

 Question 508070: 15x = 5y + 20 Write the equation of the line in slope-intercept form and identify the slope. Click here to see answer by stanbon(57323)

 Question 508076: -8x + 8y = -10 Write the equation of the line in slope-intercept form and identify the slope. Click here to see answer by stanbon(57323)

 Question 508201: solve by the elimination method 3x-2y=7 -x+5y=2 Click here to see answer by oberobic(2304)

 Question 507952: i'm having trouble putting this into an equation, thank you in advance!! i really need help... In 1962, Wilt Chamberlain set an NBA single-game scoring record. He scored 64 times for a total of 100 points. He made no 3-point shots, but he made several free throws worth 1 point each and several regular shots worth 2 points each. how many free throws did he make? How many 2-point shots did he make? Click here to see answer by ankor@dixie-net.com(15649)

 Question 508357: Can you please help me solve this one... Find the x and y intercepts of this equation: -7x + -3y = -21 Click here to see answer by mananth(12270)

 Question 508369: Solve the equations using elimination & substitution method : Please show the complete solution.Thank You. Urgent here. Please.Thanks again . 5x-2y=20 x+3y=-10 Click here to see answer by Maths68(1474)

 Question 508398: The dosage of a medicine ordered by a doctor is 40 mL of a 16% solution. A nurse has available both a 20% solution and a 4% solution of this medicine. How many milliliters of each could be mixed to prepare this 40-mL dosage? Click here to see answer by Maths68(1474)

 Question 508747: Hello could I get some help on solving 5-11/x+2=3 and what property do I use if you could show me the steps on how to do it it would be tremendous help. Thanks! Click here to see answer by jerryguo41(162)

 Question 508961: how do you put 1/6x-1/15y=-1/3 in y=mx+b format? Click here to see answer by mananth(12270)

 Question 508960: how do you put 1/2x-1/5=-1 in y=mx+b format? Click here to see answer by Theo(3460)

 Question 509092: Solve for x and y 2x + 2y=8 6x - y=10 Click here to see answer by mananth(12270)

 Question 509304: hey can you guys help me with this question pleasee(: i need help i gotta solve the linear systym usingg the substitution method... y=3x+2 x+2y=11 Click here to see answer by stanbon(57323)

 Question 509433: Cpuld you help me with naming the point on the line when the point-slope form is: y=7-2(x-3)? Your help is greatly appreciated! P.S. I got (-5,7) and it was incorrect. Click here to see answer by richard1234(5390)

 Question 509489: -8+3h=1 Click here to see answer by codyred2(1)
 Question 509489: -8+3h=1 Click here to see answer by solver91311(16877)

 Question 509582: 3n-2 Divided by 5=7/10 Click here to see answer by edjones(7569)
 Question 509582: 3n-2 Divided by 5=7/10 Click here to see answer by oberobic(2304)

 Question 509611: y=x(ab/a-b) solve for a Click here to see answer by edjones(7569)

 Question 509938: how can i solve for "a"? (5a-3(4-a))/2=5 Click here to see answer by rfer(12657)

 Question 510319: Algebra Question...a car dealership sells cars and trucks in a ratio of 7 to 5. Last month the dealership sold 84 cars and trucks. How many cars and how many trucks were sold? Need 2 equations... Click here to see answer by rfer(12657)

 Question 510724: Please!!! I keep getting 3 different answers. can you please help me break this down [7(x+5)-19] - [4(x-6)+10]= Click here to see answer by Alan3354(30993)
 Question 510724: Please!!! I keep getting 3 different answers. can you please help me break this down [7(x+5)-19] - [4(x-6)+10]= Click here to see answer by rfer(12657)

 Question 510874: y=3/8x+5 in standard form I'm a bit confused as to how to solve. I attempted and received 3x+y=5 as an answer. Although,Im not sure if this is correct Thanks for the help. Click here to see answer by rfer(12657)

 Question 510991: How do i use linear combinations to solve the system of this linear equation 2a+6z=4 3a-7z=6 Click here to see answer by stanbon(57323)

 Question 511173: 1. x-y=5 2x-5y=5 2. x-y=0 2x+3y=35 3. x-2y=6 3x-2y=2 4. y=2x-3 y=3x-3 Can u gimme the answer of this through substitution method.? Thanks in Advance.~ Click here to see answer by solver91311(16877)

 Question 511175: By graphing,: 1. y-2x=0 x+y=3 2. 2x-y=1 x+2y=-2 3.2x-6=3y y+2=2/3x 4. 1/2x +y =4 x+2y=8 Can u solve this one.? thanks in advance.! Click here to see answer by solver91311(16877)

 Question 511205: 5≤ 1/x-9 ≤-3 can some one help me solve this? Click here to see answer by stanbon(57323)

 Question 511243: Using the elimination method, how do I solve this problem: x/2+y/3=-3; x/2+2y=-8. I have tried to use the regular elimination method by adding down the columns, but fractions confuse me so I keep getting the answer wrong. Please help. Click here to see answer by solver91311(16877)

 Question 511503: what is the x-intercept and the y-intercept of the graph of 6x + 3y = 54 Click here to see answer by oberobic(2304)

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