Вычислите -14*4-36 9/14*(17/24-5/12) 9,2-9,6:1,5 2 5/8*(5/7-3/5)-9:2 1/4 Последнее...

$- 14 \times 4 - 36 = - 56 - 36 = - 92$

$\frac{9}{14} \times ( \frac{17}{24} - \frac{5}{12} ) = \frac{9}{14} \times \frac{7}{24} = \frac{3}{16}$

$9.2 - 2.6 \div 1.5 = 9.2 - 1 \frac{11}{75} = 7 \frac{7}{15}$

$2 \frac{5}{8} \div ( \frac{5}{7} - \frac{3}{5} ) - 9 \div 2 \frac{1}{4}$

решаем по действиям :

$1) \frac{5}{7} - \frac{3}{5} = \frac{25}{35} - \frac{21}{35} = \frac{4}{25}$

$2)9 \div 2 \frac{1}{4} = 9 \div \frac{9}{4} = 9 \times \frac{4}{9} = \frac{36}{9} = 4$

$3)2 \frac{5}{8} \div \frac{4}{35} = \frac{21}{8} \div \frac{4}{35} = \frac{21}{8} \times \frac{35}{4} =$

$= \frac{735}{32} = 22 \frac{31}{32}$

$4)22 \frac{31}{32} - 4 = 18 + \frac{31}{32} = 18 \frac{31}{32}$

Ответ :

$18 \frac{31}{32}$