Question

Вычисли пример (7- 5 3/8)×8+1 12/13÷5/26×(1/5+2/3
Быстрей

Answer 1

$1)7 - 5 \frac{3}{8} = 6 \frac{8}{8} - 5 \frac{3}{8} = 1 \frac{5}{8}$

$2)1 \frac{5}{8} \times 8 = \frac{13}{8} \times \frac{8}{1} = 13$

$3)1 \frac{12}{13} \div \frac{5}{26} = \frac{25}{13} \times \frac{26}{5} = 10$

$4) \frac{1}{5} + \frac{2}{3} = \frac{3}{15} + \frac{10}{15} = \frac{13}{15}$

$5)10 \times \frac{13}{15} = \frac{26}{3} = 8 \frac{2}{3}$

$6)13 + 8 \frac{2}{3} = 21 \frac{2}{3}$