aidez moi svp !!!!!!

a 2(x+1)=3(x-1)
2x+2=3x-3
2x-3x=-3-2
-X=-5
X=5
b 3(2-3y)=-(y-2)
6-9y=-y+2
-9y+y=2-6
-8y=-4
y=-4/-8
y=1/2
c-2(a-1)=4(2a+1)
-2a+2=8a+4
-2a-8a=4-2
-10a=2
a=-2/10
a=-1/5