Ответ: (212.5/y+2.5)*y=297.5212.5+2.5y=297.52.5y=297.5-212.52.5y=85y=85/2.5y=34x=212.5/34=6.25

Ответ:

Ответ:

x=6.25

y=34

Пошаговое объяснение:

x*y=212.5

(x+2.5)*y=297.5

решение

y=212.5/x

(x+2.5)*(212.5/x)=297.5

212.5/x=297.5/(x+2.5)

(x+2.5)/x=297.5/212.5

(x+2.5)/x=1.4

x+2.5=1.4x

1.4x=x+2.5

1.4x-x=2.5

0.4x=2.5

x=2.5/0.4

x=6.25

y=212.5/6.25

y=34