Помогите ПЖ
3(4а-7b-6)=
-10(2f-6b+3)=
(x-3y)(-7)=
-0,2(10a+4b-c)=
6(x+2)-3x=
4x-5-3(2x-10)=
7(x-3)-(4x-15)=
4(2x+3)-3(4x-6)=

1)12а-21б-182)-20f+60b-303)-7x+21y4)-2a-0,8b+0,2c5)6x+12-3x=3x+126)4x-5-6x+30=-2x-5+307)7x-21-4x+15=3x-68)8x+12-12x+18=-4x+30