Question

31/42-(y+9/42)=15/42

Answer 1

Ответ:

Пошаговое объяснение:

31/42-(y+9/42)=15/42

31/42-y-9/42=15/42

-y=15/42+9/42-31/42

-y=-7/42=-1/6

y=1/6

Answer 2

31/42-(y+9/42)=15/42
y+9/42=31/42-15/42
y+9/42=16/42
y=16/42-9/42
y=7/42
y=1/42