Question

This isn’t so much a question but I need help checking my answers to make sure they’re right. The problems are in the picture, I just need to know if I did it wrong or not thankss.

Here’s my answers :
1.) W=-24
2.) X=3
3.) Z=5
4.) X=8

Answer 1

1, w = -24

2, x= 21 divide by 7 = x =3

3, z = 5

4, x = 10.5

you did everything right x but your number 4 was wrong it is 10.5