1. (3b--5b) 2.2x-3/3+7x-13/6+5-2x/2=x-1 3. -10x(3a-4b-2) 4. 3y(a-2b)

1)(3b-2)-(5-5b)=3b-2-5+5b=8b-7
2)(2x-3)/3+(7x-13)/6+(5-2x)/2=x-1
2(2x-3)+7x-13+3(5-2x)=6(x-1)
4x-6+7x-13+15-6x-6x+6=0
-x=-2
x=2
3)-10x(3a-4b-2)=-30ax+40bx+20x
4)3y(a-2b)=3ay-6by