Помогите! Раскрыть скобки:

1) 5 (9a-4b+c)

2) - 8 (x-8-7y)

3) (m+7n-6r) * (-1.3)

4) - a (-b-4,2d+3c)

5) - 0,8x (-7-3m=1.2p)

6) - 12 (5/6x = 1/4y-5/12z-0.1)

1) 5 (9a-4b+c) = 45a - 20b + 5c

2) - 8 (x-8-7y) = - 8x + 64 + 56y

3) (m+7n-6r) * (-1.3) = - 1.3m - 9.1n + 7.8r

4) - a (-b-4,2d+3c) = ab + 4.2ad - 3ac

5) - 0,8x (-7-3m+1.2p) = 5.6x + 2.4xm - 0.96xp

6) - 12 (5/6x + 1/4y-5/12z-0.1) = - 10x - 3y + 5z + 1.2

45a-20b+5c

-8x+64+56y

-1.3m-9.1n+7.8r

ab+4,2ad-3ac

5.6x+2.4m=-0.96p

-10x=-3y+5z+1.2