Question

упростите a2-b2/5a2 * a/3a+3b

Answer 1

=$frac{a^{2}-b^{2} }{5a} * frac{a}{3a+3b} = frac{(a-b)(a+b)}{5a^{2} } * frac{a}{3(a+b)} = frac{a-b}{5a} * frac{1}{3} = frac{a-b}{15a}$

Answer 2

В знаменателе 1 дроби 5а^2