Question

system of equation help
2x+y-3z=-12
3x-2y-z=3
-x+5y+2z=-3

Answer 1

Please help me!!!
I started with the third equation and got x=5y+2z+3

Answer 2

then i substitued it to the first and second equation and got 11y-1z=-6 and 13y+5z=-6

Answer 3

continue the same way, with your two new equations

Answer 4

from the first equation: z=11y + 6

substitute for z in 13y+5z=-6

Answer 5

is z=4??

Answer 6

Yes

Answer 7

Z being 4, I replaced it in the equation 13y+5z=-6 and got y=-2

Answer 8

then 5y+2z+3=x i replaced y=-2 and z=4 and got x=-9

Answer 9

Please confirm my answers
y=-2
z=4
x=-9