Question

PLEASE SOLVE I NEED​

Answer 1

Answer:

x=-3,y=-2,z=4,and a=3

Step-by-step explanation:

Hear.. x+3=0

then , x=-3

z-1=3

so, z=3+1=4

2y+x=-7

hear, x=-3

so, 2y+(-3)=-7

2y-3=-7

2y=-7+3

2y=-4

and y=-4/2=-2

4a-6=2a

4a-2a=6

2a=6

a=6/2=3