SOLUTION: ok so this is my equation. and i get it and all its just i cant get it to work but the teacher told us that i had to be in whole answers -2x+y+z=-2 5x+3y+3z=71 4x-2y-3z=1

Question 105860: ok so this is my equation.
and i get it and all its just i cant get it to work
but the teacher told us that i had to be in whole answers
-2x+y+z=-2
5x+3y+3z=71
4x-2y-3z=1
this is what i have tried so far..

5x+3y+3z=71
4x-2y-3z=1
-----------
9x+y=72
and then from there i have tried them all, and it just wont come out.!
please help me.!

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
(3 times the first equation) added to the third equation gives -2x+y=-5 , so y=2x-5
...substitute into the equation you found to get x

9x+(2x-5)=72

use the x-value to find y; and then use the x and y values to find z
RELATED QUESTIONS
5z squared plus 5z plus 5 divided by 7z squared plus 7z plus 7. My name is Rachel and I (answered by jim_thompson5910)

So this lesson is simplifying radical fractions and i can understand the simple ones... (answered by solver91311)

hi the type of homework i have is called " factoring complex quadratics" the equation is... (answered by josgarithmetic)

I literally have no clue how to solve rational equations. My math teacher is horrible at... (answered by stanbon)

I am having a really really hard time in pre-algebra. Everything my teacher tells me... (answered by rfer)

I am trying to solve an equation with fractions. This is the problem 2x over x^2+6x+8 (answered by stanbon)

Hi there! I just started highschool at a collegiate school. I am so thankful I got in,... (answered by Alan3354,ikleyn)

Hi my name is jason and i dont have problems out of a text book but in a packet that my... (answered by Earlsdon)

I am stuck on a problem. My algebra teacher told us that we have to check it and show all (answered by Alan3354)