Question

ДАЮ 50 БАЛОВ БОЛШЕ НЕТ ТОЛЬКО БИСТРО ПЖ

Answer 1

Ответ:

$- 2 \frac{1}{8} \div 4 \frac{1}{4} = - \frac{17}{8} \div \frac{17}{4} = - \frac{17}{8} \times \frac{4}{17} = - \frac{1}{2} \times \frac{1}{1} = - \frac{1}{2}$

$1 \frac{8}{27} \div ( - 1 \frac{5}{9} ) = \frac{35}{27} \div ( - \frac{14}{9} ) = \frac{35}{27} \times ( - \frac{9}{14} ) = \frac{5}{3} \times ( - \frac{1}{2} ) = - \frac{5}{6}$

$- 11 \frac{2}{5} \div ( - 3 \frac{4}{5} ) = - 11.4 \div ( - 3.8) = 3$

$- 4 \frac{2}{7} \div 1 \frac{19}{21} = - \frac{30}{7} \div \frac{40}{21} = - \frac{30}{7} \times \frac{21}{40} = - \frac{3}{1} \times \frac{3}{4} = - \frac{9}{4} = - 2 \frac{1}{4}$

Answer 2

Пошаговое объяснение:

1)

-2 1/8 : 4 1/4 = -17/8 : 17/4 = -17/8 * 4/17 =

-1/2 * 1/1 = -1/2

2)

1 8/27 : (-1 5/9) = 35/27 : (-14/9) = 35/27 * (-9/14) =

5/3 * (-1/2) = -5/6

3)

-11 2/5 : (-3 4/5) = 57/5 : 19/5 = 57/5 * 5/19 =

3/1 * 1/1 = 3/1 = 3

4)

-4 2/7 : 1 19/21 = -30/7 : 40/21 = -30/7 * 21/40 =

-3/1 * 3/4 = -9/4 = -2 1/4