Question

Сложите дроби 4a-13b/21ba + 3a+6b/21ab​

Answer 1

Ответ:

$\frac{4a - 13b}{21ba} + \frac{3a + 6b}{21ab} = \frac{4a - 13b}{21ab} + \frac{3a + 6b}{21ab} = \frac{4a - 13b + 3a + 6b}{21ab} = \frac{7a - 7b}{21ab} = \frac{7(a - b)}{21ab} = \frac{a - b}{3ab}$