Задача №7610

$\frac{x+y}{x-y}$$\frac{x+y}{x-y}$$$\frac{x+y}{x-y}$$ и $\frac{49}{(x-y{)}^2}$$\frac{49}{(x-y{)}^2}$$$\frac{49}{(x-y{)}^2}$$