SOLUTION: how do i slove this system 3x+5y=-3 10y-2z=2 x=-z

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Question 264432: how do i slove this system
3x+5y=-3
10y-2z=2
x=-z
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
how do i slove this system
3x+5y=-3
10y-2z=2
x=-z
------------
Sub -x for z in the 2nd eqn, then it's a 2 eqn system.
3x+5y=-3 --> 6x+10y=-6
10y+2x=2
--------
6x+10y=-6
2x+10y=2
-------- Subtract
4x = -8
--------
Take it from there.