Решите уравнения. (63-y)+109=121

Question

Решите уравнения. (63-y)+109=121

Answer 1

(63-у)+109=121
(63-у)=121-109
63-у=12
у=63-12
у=51
Ответ:51

Answer 2

(63-y)+109=121
63-y+109=121
-y=121-109-63
-y=-51
y=51