Question

5. Решите уравнение и выполните проверку:
12+3(у + 3) =27​

Answer 1

12+3(y+3)=27

15+3+y=27

18+y=27

y=27-18

y=9

12+3(9+3)=27

27=27

Answer 2

15(у+3)=27
15у+45=27
15у=27-45
15у=18
у=18/15
у=6/5