1)22x+x-10=59
23x=59+10
23x=69
x=69:23
x=3
2)14y-2y+76=100
12y=100-76
12y=24
y=24:12
y=2
3)(7a-2a)*8=80
5a*8=80
40a=80
a=80:40
a=2
