Question

помогите решить уравнение 5y+7(3-y)=3(5-2y)-6

Answer 1

5у+21-7у=15-6у-6

21-2у=9-6у

21+4у=9

4у=-12

у=-3

Answer 2

5y+7(3-y)=3(5-2y)-6

5y+21-7y=15-6y-6

5y-7y+6y=21+6

4y=27

y=27/4

y=6.75