Задача №7658

Приведите к общему знаменателю: $\frac{2mn}{3n^2-3m^2}$$\frac{2mn}{3n^2-3m^2}$$$\frac{2mn}{3n^2-3m^2}$$ и $\frac{m^2}{m^2-2mn+n^2}$$\frac{m^2}{m^2-2mn+n^2}$$$\frac{m^2}{m^2-2mn+n^2}$$ и $\frac{n^2}{m^2+2mn+n^2}$$\frac{n^2}{m^2+2mn+n^2}$$$\frac{n^2}{m^2+2mn+n^2}$$