Question

Решите уравнения 17y+29-5y=137

Answer 1

17у-5у=137-29
12у=108
у=108/12
у=9

Answer 2

17y-5y=137-29
12y=108
y=108/12
y=9
_______________
17*9+29-5*9=137
153+29-45=137
137=137