Question

4+7(5-у)=-10у+9
решите уравнение

Answer 1

4+7(5-у)=-10у+9
4+35-7у=-10у+9
3у=-30
у=-10
Ответ: у=-10

Answer 2

4+35-7y=-10y+9
-7y+10y=-4-35+9
3y=-30
y=-30:3
y=-10