Question

Решить уравнение 4/21-4/77+4/7

Answer 1

Пошаговое объяснение:

$\frac{4}{21} - \frac{4}{77} + \frac{4}{7} = \frac{44}{231} - \frac{12}{231} + \frac{4}{7} = \frac{44 - 12}{231} + \frac{4}{7} = \frac{32}{231} + \frac{4 }{7} = \frac{32}{231} + \frac{132}{23} = \frac{32 + 132}{231} = \frac{164}{231}$