Question

3-y+2(5-y)=4y-8 помогите пожалуйста

Answer 1

3-y+2(5-y)=4y-8

3-у+10-2у=4у-8

-у-2у-4у=-8-3-10

(-1-2-4)у=-21

-7у=-21

у=-21:(-7)

у=3

 

Answer 2

3-y+2(5-y)=4y-8

3-y+10-2y=4y-8

-y-2y-4y=-3-10-8

-7y=-21

y=-21:(-7)

y=3

Ответ:3