几道数学算术题

1/2（7-4x)=6+3/2(4x-7)
-1/2（4x-7)=6+3/2(4x-7)
3/2(4x-7)+1/2（4x-7)=-6
2（4x-7)=-6
4x-7=-3
4x=7-3
4x=4
x=1
(1-y)/3 -y=3- (y+2)/4
12*(1-y)/3 -12*y=12*3- 12*(y+2)/4
4(1-y) -12y=36-3(y+2)
4-4y-12y=36-3y-6
4-16y=30-3y
16y-3y=4-30
13y=-26
y=-2
1.5x-1/3-x/0.6=0.5
3x/2-1/3-x/(3/5)=1/2
3x/2-1/3-x*5/3=1/2
3x/2-1/3-5x/3=1/2
6*3x/2-6*1/3-6*5x/3=6*1/2
9x-2-10x=3
9x-10x=3+2
-x=5
x=-5