Question

Решите пример

$frac{x+m}{xm}+frac{y-m}{ym}$

Answer 1

(x+m)/xm+(y-m)/ym= ((x+m)*y+(y-m)*x)/xym=(xy+my+xy-mx)/xym=(2xy+my-mx)/xym
или 2/m+1/x+1/y