Question

с пошоговыми действиями​

Answer 1

636.

$1)x - 8 = 2 \div \frac{2}{5} = 2 \times \frac{5}{2} \\ x - 8 = 5 \\ x = 5 + 8 \\ x = 13$

Сделаем проверку

$(13 - 8) \times \frac{2}{5} = 2 \\ 2 = 2$

$2)2 \frac{1}{3} x = 2 \frac{1}{3} + 2 \frac{1}{3} \\ 2 \frac{1}{3} x = 4 \frac{2}{3}$

$2 \frac{1}{3} \times 2 - 2 \frac{1}{3} = 2 \\ 2 = 2$

$x = 4 \frac{2}{3} \div 2 \frac{1}{ 3} = \frac{14}{3} \div \frac{7}{3} \\ x = \frac{14}{3} \times \frac{3}{7} = 2$

Проверка: