# 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 429955: I have to show my work and I only know how to do these on a calculator any help would be greatly appreciated!! -4x - 5y - 8z = 268 -10x + 7y + 6z = -786 -12x + 9y - 2z = -548 Click here to see answer by ewatrrr(10682)

 Question 429953: -3x + y + 11z = -410 -4x - 6y + 5z = -214 -2x - 2y + 6z = -244 I need to solve this and show work any help would be greatly appreciated !! Click here to see answer by ewatrrr(10682)

 Question 429951: -11x - 3y - 10z = 17 -12x - 5y + 2z = 84 3x - 6y + 3z = 51 I could really use some help some on this one!! Click here to see answer by ewatrrr(10682)

 Question 430004: solve by elimination, to include solution (if any) and ordered pair 0.05x+0.25y=11 0.15x+0.05y=12 Click here to see answer by ewatrrr(10682)
 Question 430004: solve by elimination, to include solution (if any) and ordered pair 0.05x+0.25y=11 0.15x+0.05y=12 Click here to see answer by josmiceli(9698)

 Question 430002: 6x-9y=25.5 7y-3x=-14 solve by elimination, to include solution, if any & ordered pair. Click here to see answer by ewatrrr(10682)

 Question 430099: Solve the system by elimination or substitution.Show all steps. -15x+3y=6 y=2+5x Click here to see answer by stanbon(57424)
 Question 430099: Solve the system by elimination or substitution.Show all steps. -15x+3y=6 y=2+5x Click here to see answer by haileytucki(390)

 Question 430119: ok here is the question graph 4x-y=1 by finding ordered pairs to satisfy the equation im studying the thea study guide i see this in the book and gives me values to replace x but i dont understand how you get the values. have not done this stuff in years please help, thanks Click here to see answer by stanbon(57424)
 Question 430119: ok here is the question graph 4x-y=1 by finding ordered pairs to satisfy the equation im studying the thea study guide i see this in the book and gives me values to replace x but i dont understand how you get the values. have not done this stuff in years please help, thanks Click here to see answer by haileytucki(390)

 Question 430377: A staircase of 7 steps takes you 56 inches vertically and 70 inches horizontally. What is the rate of change for each step? Click here to see answer by stanbon(57424)

 Question 430502: compute the discriminant. then determine the number and type of solution given for the equation. 9 the letter x=18 and the letter x negative9 Click here to see answer by Alan3354(30993)

 Question 430577: Hello, I have 4 differnt problems that deal with Substitution Method & Addition Method in which I am hoping you will be able to help me understand how to solve them. The first one is with Substituion Method I can't figure out the solution sets. The second one is with Substituion Method as well I cant figure out the solution sets. The third problem is with Addition Method i am not sure of the solution sets on this one. The final problem is with addition method as well I dont know the solution sets. If you could please help me with these problems i would REALLYYY appriciate it! I am soooo lost. THANK YOUU!! Click here to see answer by ankor@dixie-net.com(15667)

 Question 431113: find the midpoint of the line segment with endpoints (-5,-1) and (9,5)? Click here to see answer by ewatrrr(10682)

 Question 431371: help me solve using Gauss-Jordan elimination 2xl+4x2-10x3=-2 3xl+9x2-2lx3=0 xl+5x2-12x3=1 Click here to see answer by Edwin McCravy(8924)

 Question 431949: SOLVE BY SUBSTITUTION METHOD :) x+4=-1/2+4x 2x+3y=1/2x+2y+1 solve by ADDITION METHOD :) 3Y-1 divided by 2= 3x+8 divided by 5 x+y divided by 2= 6+x-y divided by 2 Click here to see answer by anshu_a(16)

 Question 431950: 5 divided by x minus 6 divided by y equal 1 17 divided by x plus 30 divided by y equals 16 Click here to see answer by anshu_a(16)

 Question 432235: Hi, I was wondering if you could help me solve this system of equation algebraically. Question: Solve the following systems of equations algebraically and check. 2/3x + y = 13 -x + 2y + 5 I am having truble understanding what to do since it has a fraction. I keep getting decimals and when I check the answers are not coming out correct. Thanks for all your help. It is greatly appreciated. Click here to see answer by mananth(12270)

 Question 432350: Joe lives 5 miles from the school and Maya lives 2 miles from the school. If joe walks from his house in anopposite direction from the school at a speed of 4 miles per hour, and Maya walks from her house in an opposite direction from the school at a speed of 6 miles per hour, after how long will they be the same distance from the school? What is that distance? Click here to see answer by shree840(260)

 Question 432544: Solve the system of equations by graphing. y+2x=-3 -6x-3y=9 Click here to see answer by ewatrrr(10682)

 Question 432554: Sarah Meeham blends coffee for Tasti-Delight. She needs to prepare 190 pounds of blended coffee beans selling for \$4.55 per pound. She plans to do this by blending together a high-quality bean costing \$5.50 per pound and a cheaper bean at \$3.25 per pound. To the nearest pound, find how much high-quality coffee bean and how much cheaper coffee bean she should blend. Click here to see answer by rwm(914)