[tex]1)\frac{2}{x-y} +\frac{2}{x+y}=\frac{2x+2y+2x-2y}{(x-y)(x+y)}=\frac{4x}{x^{2}-y^{2}}\\\\2)\frac{x+y}{x}*\frac{x^{2} }{ax+ay}=\frac{(x+y)*x^{2}}{x*a*(x+y)} =\frac{x}{a}\\\\3)\frac{a^{2}-b^{2}}{b}:\frac{a^{2}+ab }{b} =\frac{(a-b)(a+b)}{b}*\frac{b}{a(a+b)}=\frac{a-b}{a}[/tex]
:::Объяснение на фото:::
