Question

Помогите:(7 5/12-3 1/6)*2 2/17

Answer 1

Пошаговое объяснение:

$(7 \frac{5}{12} - 3 \frac{1}{6} ) \times 2 \frac{2}{17} = 9$

$1)7 \frac{5}{12} - 3 \frac{1}{6} = \frac{5 + 7 \times 12}{12} - \frac{1 + 3 \times 6}{6} = \frac{89}{12} - \frac{19}{6} = \frac{89 \times 1}{12 \times 1} - \frac{19 \times 2}{6 \times 2} = \frac{89}{12} - \frac{38}{12} = \frac{89 - 38}{12} = \frac{51}{12} = \frac{17 \times 3}{4 \times 3} = \frac{17}{4} = \frac{4 \times 4 + 1}{4} = 4 \frac{1}{4}$

$2)4 \frac{1}{4} \times 2 \frac{2}{17} = \frac{1 + 4 \times 4}{4} \times \frac{2 + 2 \times 17}{17} = \frac{17}{4} \times \frac{36}{17} = \frac{17 \times 36}{4 \times 17} = \frac{612}{68} = \frac{9 \times 68}{68} = 9$

Answer 2

Ответ:

9

Пошаговое объяснение:

_____________________