Question

Помогите алгебра 8 класс срочно ,3 упрастите выражение

Answer 1

$....=( frac{6}{(y-3)(y+3)}- frac{1}{y-3})* frac{(y+3)(y+3)}{5} = frac{6-y-3}{(y-3)(y+3)} * frac{(y+3)(y+3)}{5} = \ \ frac{(3-y)(y+3)}{5(y-3)} =- frac{(y-3)(y+3)}{5(y-3)} = -frac{y+3}{5}$