Question

ВЫЧЕСЛИТЕ: 7/39*(1/7+6/49)

Answer 1

Ответ:

$\frac{7}{39} \times (\frac{1}{7} + \frac{6}{49} ) = \frac{1}{21}$

Пошаговое объяснение:

1)

$\frac{1}{7} + \frac{6}{49} = \frac{7}{49} + \frac{6}{49} = \frac{13}{49}$

2)

$\frac{7}{39} \times \frac{13}{49} = \frac{1 \times 1}{3 \times 7} = \frac{1}{21}$