Question

помогите решить срочно

Answer 1

$\frac{\frac{2y}{x}-\frac{x}{2y}}{2y+x}=\frac{\frac{4y^2-x^2}{2xy}}{2y+x}= \frac{(2y-x)(2y+x)}{2xy(2y+x)}=\frac{2y-x}{2xy}=\frac{1}{x}-\frac{1}{2y}$