Ответ:

1) -5(-1-а) = 5+а

2) -2(4x +5-5) = -6x -10 +10= -6x

3) (5-4y) *(-3) = -15+12y

4) (6a+1) *2 =12a +2

5)(-3-4b) * (-0,1) =0,3b+0,4b

6) 3(2d-1)*2 =6(2d-1) =12d -6