Question

самый нижние уравнение

Answer 1

-3y - 1 = -2y + 4y = 2y = 7y - 2y = 5y

Answer 2

3(x-1)= 2(2-x)+6
3x-3=4-2x+6
3x+2x=4+6+3
5x=13
x=2,6

7у-(4у+(-3у-1))=7y-(4y-3y-1)=7y-(y-1)=7y-y+1=6y+1