Can someone please help me with my open needed question

Question

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

Answer 1

from the last:
2X+2z= 4
x+z=4
z = 4-x

from the first:
-X-y-z= -8
z = 8-x-y

so 4-x = 8-x-y
y = 4

from the 2nd:
-4+4y+5z =7
-4 + 16 + 5z = 7
5z = -5
z = -1
then in z = 4-x
-1 = 4-x
x = 5

x=5, y=4, z=-1

Answer 2

Oh reiny this was such a big help you have no idea thank you so much