Question

5×1/7+5×6/7=_____.помогите​

Answer 1

Ответ:

$5*\frac{1}{7}+5*\frac{6}{7}= \frac{5}{7}+\frac{30}{7}=\frac{35}{7}=5$

Пошаговое объяснение:

Answer 2

Ответ:

$1) \: 8 \times \frac{4}{11} + 8 \times \frac{7}{11} = \frac{32}{11} + \frac{56}{11} = \frac{88}{11} = 8$

$2) \: 5 \times \frac{1}{7} + 5 \times \frac{6}{7} = \frac{5}{7} + \frac{30}{7} = \frac{35}{7} = 5$

$3) \: \frac{2}{5} \times \frac{6}{13} + \frac{1}{4} \times \frac{6}{13} = \frac{6}{13} ( \frac{2}{5} + \frac{1}{4} ) = \frac{6}{13} \times \frac{13}{20} = \frac{3}{10}$

$4) \: \frac{5}{8} \times \frac{5}{6} - \frac{1}{4} \times \frac{5}{6} = \frac{5}{6} ( \frac{5}{8} - \frac{1}{4} ) = \frac{5}{6} \times \frac{3}{8} = \frac{5}{16}$

$5) \: \frac{3}{5} - \frac{3}{5} \times \frac{2}{7} = \frac{3}{5} (1 - \frac{2}{7} ) = \frac{3}{5} \times \frac{5}{7} = \frac{3}{7}$

$6) \: \frac{1}{7} \times \frac{1}{8} + \frac{1}{7} \times \frac{1}{6} = \frac{1}{7}( \frac{1}{8} + \frac{1}{6} ) = \frac{1}{7} \times \frac{7}{24} = \frac{1}{24}$