Question

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

Answer 1

1. x=−y+8−z 2.x=−​7−4y−5z (everything over 4) ​​ 3.x=2−z 1.y=-x+8-z 1.z=-x+4-y 2.y=7+4x-5x (everything over 4) 2.z=7+4x-4y (everything over 5) 3.z=2-x