Question

2 1/5 - 21/25*(6 8/9:2 7/12-5/12*4 4/35) Помогите с домашкой

Answer 1

Решение:

$2 \frac{1}{5} - \frac{21}{25} \times (6 \frac{8}{9} \div 2 \frac{7}{12} \times 4 \frac{4}{35} )$

$\frac{11}{5} - \frac{51}{25} - ( \frac{62}{9} \div \frac{31}{12} - \frac{5}{12} \times \frac{144}{35} )$

$\frac{11}{5} - \frac{51}{25} \times ( \frac{62}{9} \times \frac{12}{31} - \frac{12}{7} )$

$\frac{11}{5} - \frac{51}{25} \times ( \frac{2}{3} \times 4 - \frac{12}{7} )$

$\frac{11}{5} - \frac{51}{25} \times (\frac{8}{3} - \frac{12}{7})$

$\frac{11}{5} - \frac{51}{25} \times \frac{20}{21}$

$\frac{11}{5} - \frac{17}{5} \times \frac{4}{7}$

$\frac{11}{5} - \frac{68}{35}$

$\frac{9}{35}$

Ответ:$\frac{9}{35}$