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-18 2)-20f+60b-30 3)-7x+21y 4)-2a-0,8b+0,2c 5)6x+12-3x=3x+12 6)4x-5-6x+30=-2x-5+30 7)7x-21-4x+15=3x-6 8)8x+12-12x+18=-4x+30