SOLUTION: x-y+2z=-7
y+z=1
x=2y+3z
I did start this problem but got stuck fairly quickly. We're supposed to be solving using substitution or elimination. Please get back to me as soon as
Algebra ->
Coordinate Systems and Linear Equations
-> SOLUTION: x-y+2z=-7
y+z=1
x=2y+3z
I did start this problem but got stuck fairly quickly. We're supposed to be solving using substitution or elimination. Please get back to me as soon as
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Question 989648: x-y+2z=-7
y+z=1
x=2y+3z
I did start this problem but got stuck fairly quickly. We're supposed to be solving using substitution or elimination. Please get back to me as soon as possible, thanks! Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! x-y+2z=-7
y+z=1
x=2y+3z
==============
Sub for x in the 1st eqn.
(2y + 3z) - y + 2z = 7
y + 4z = 7
y + z = 1
=================== Subtract
3z = 6
z = 2 *******************
------
y + z = 1
y = -1 **********************
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Sub for y & z anywhere to find x.
