Question

спростити вираз алгебра 8 клас​

Answer 1

Ответ:

$\frac{5(a-3}{a}$

Объяснение:

$\frac{5a}{a+3} +\frac{135(a-6)}{-(3a+9)a(a-6)} =\frac{5a}{a+3}-\frac{135}{3a(a+3)} =\\=\frac{15a^{2}-135 }{3a(a+3)} =\frac{5a^{2}-45 }{a(a+3)} =\frac{5(a+3)(a-3)}{a(a+3)} =\\=\frac{5(a-3)}{a}$