3x+2 = 29
2x=24
2z -5=25
12 + x =25
(x : 4)+3=2
x - 5 = 25
3z=24
4z=40
z : 3 = 7
z=8
x=30
x=12
z=15
z=10
z=21
x=9
x=-4
X=13
