Respuesta :

Answer:

6.

a) where +3b should be - 3b.

b) -4(5a+2-3b)

c) -4(5a+2-3b)= -20a-8+12b

11.

-6(x-3)

12.

-15y-40= -5(3y+8)

-5(3y+8)= -15y-40

I really hope it helped, good luck! :)