Question

-5(2,1х+4)-3(2,9х-8)


-(3,4-y)-2(5-2d)


7-2(x-1)=6-3

Answer 1

Ответ:

1)-10,5х-20-8,7х+24=-19,2х+4

2)-3,4+у-10+4у=5у-13,4

3)7-2х+2=6-3=-2х=6-3-2-7

-2х=-6

х=3