РЕШИТЕ ПОЖАЛУЙСТА СРОЧНО НАДО!!!

A)
$\frac{3}{5x^2y} - \frac{2}{3xy^2} = \frac{9y-10x}{15x^2y^2}$
b)
$\frac{4}{y^2-4} - \frac{1}{y-2} = \frac{4}{(y-2)(y+2)} - \frac{1}{y-2} = \frac{4-y-2}{(y-2)(y+2)} = \frac{-(y-2)}{(y-2)(y+2)} = -\frac{1}{(y+2)}\\$
v)
$\frac{3a+3b}{a^2+2ab+b^2} - \frac{2}{a+b} = \frac{3a+3b}{(a+b)^2} - \frac{2}{a+b} = \frac{3a+3b-2a-2b}{(a+b)^2} = \frac{a+b}{(a+b)^2} = \frac{1}{a+b}\\$
g)
$\frac{6}{5a-10} - \frac{2}{3a-6} = \frac{6}{5(a-2)} - \frac{2}{3(a-2)} = \frac{18-10}{15(a-2)} = \frac{8}{15(a-2)}$