Question

solve the system by substitution
-x-y-z=-8
-4x+4y+5z=7
2x+2z=4

Answer 1

what kind of teacher makes you use substitution with 3 variables?
anyways i'll help you

Answer 2

this is completely confusing

Answer 3

okay this is too much for me to draw but i figured out y=6

Answer 4

i have to find x y z right? i think i could figure it out on a graphing calculator but i still need to show my work im a tad bit frustrated with this one.

Answer 5

z=-1

Answer 6

x=3

Answer 7

okay i'll draw out what i did

Answer 8

thank you

Answer 9

i did it wrong; sorry
too much variables going on

Answer 10

oh wait i did it right!