x-1/2=1
X=1+1/2
X=3/2
-1/2x=2
X=2/(-1/2)
X=-4
6=3/2x
X=6/(3/2)
X=6*(2/3）
X=4
1-2x=5
-2X=5-1
-2X=4
X=4/(-2)
X=-2