Question

Помогите с алгеброй!

Answer 1

Ответ:

$\frac{15 {a}^{2} }{ {a}^{2} - 25 } \div \frac{15a}{a + 5} = \frac{15 {a}^{2} }{(a - 5)(a + 5)} \times \frac{a + 5}{15a} = \frac{a}{a - 5}$

Answer 2

$\frac{15a^{2}}{a^{2}-25}:\frac{15a}{a+5} =\frac{15a^{2}}{(a-5)(a+5)} *\frac{a+5}{15a} =\frac{a}{a-5} \\\\Otvet:\boxed{\frac{a}{a-5}}$