0.5x+6=18
0.5x=18-6
0.5x=12
x=24
3/4x-1/3x=2
9/12x-4/12x=2
5/12x=2
x=4.8
8-4.5x=7/2
8-4.5x=3.5
4.5x=8-3.5
4.5x=4.5
x=1
(x-7)/3=8
x-7=24
x=24+7
x=31
0.5x+6=18
0.5x=18-6
0.5x=12
x=24
3/4x-1/3x=2
9/12x-4/12x=2
5/12x=2
x=4.8
8-4.5x=7/2
8-4.5x=3.5
4.5x=8-3.5
4.5x=4.5
x=1
(x-7)/3=8
x-7=24
x=24+7
x=31