Question

586 задание пожалуйста плиз четные

Answer 1

$8 \times \frac{4}{11} + 8 \times \frac{7}{11} = 8 \times ( \frac{4}{11} + \frac{7}{11} ) = 8 \times \frac{11}{11} = 8 \times 1 = 8$
$5 \times \frac{1}{7} + 5 \times \frac{6}{7} = 5 \times ( \frac{1}{7} + \frac{6}{7} ) = 5 \times \frac{7}{7} = 5 \times 1 = 5$