-7(2х+3)-(х-5)= 4(4х-2)+7(1-6х)= 12а-5(3а-4)= -6(7б-3)+9а= -5(-6х+3)+(5-2х)=...

Question

-7(2х+3)-(х-5)=
4(4х-2)+7(1-6х)=
12а-5(3а-4)=
-6(7б-3)+9а=
-5(-6х+3)+(5-2х)=
0,4(4х-2у-1)=
-0,9(у-5х)

Answer 1

-7(2х+3)-(х-5)= -14х-21-х+5= -15х-16
4(4х-2)+7(1-6х)=16х-8+7-42х= -26х-1
12а-5(3а-4)=12а-15а+20= -3а+20
-6(7б-3)+9а= -42б+18+9а
-5(-6х+3)+(5-2х)=30х-15+5-2х=28х-10
0,4(4х-2у-1)=1,6х-0,8у-0,4
-0,9(у-5х)= -0,9у+4,5х