Question

Выполните действие: 1) 7 1/3 - 1/5 - 1 1/15; 2) 3 7/8 - 1 1/4 - 1/2; 3) 4 7/9 - 1 2/3 + 1/6.​

Answer 1

Пошаговое объяснение:

1)

$7 \frac{1}{3} - \frac{1}{5} - 1 \frac{1}{15} = 7 \frac{5}{15} - \frac{3}{15} - 1 \frac{1}{15} = 7 \frac{2}{15} - 1 \frac{1}{15} = 6 \frac{1}{15}$

2)

$3 \frac{7}{8} - 1 \frac{1}{4} - \frac{1}{2} = 3 \frac{7}{8} - 1 \frac{2}{8} - \frac{4}{8} = 2 \frac{5}{8} - \frac{4}{8} = 2 \frac{1}{8}$

3)

$4 \frac{7}{9} - 1 \frac{2}{3} + \frac{1}{6} = 4 \frac{14}{18} - 1 \frac{12}{18} + \frac{3}{18} = 3 \frac{2}{18} + \frac{3}{18} = 3 \frac{5}{18}$

Answer 2

Пошаговое объяснение:

1) 7 1/3 - 1/5 - 1 1/15 = 7 5/15 - 3/15 - 1 1/15 = 7 2/15 - 1 1/15 = 6 1/15

2) 3 7/8 - 1 1/4 - 1/2 = 3 7/8 - 1 2/8 - 4/8 = 2 5/8 - 4/8 = 2 1/8

3) 4 7/9 - 1 2/3 + 1/6 = 4 14/18 - 1 12/18 + 3/18 = 3 2/18 + 3/18 = 3 5/18