1) 11 2) 4 3) 5 4) 15 : 5 - :22 _ :2 _ :10 _ 15 7 8 7

Решите задачу:

$\frac{11}{15}: 22= \frac{11}{15} : \frac{22}{1}= \frac{11}{15}* \frac{1}{22}= \frac{1*1}{15*2} = \frac{1}{30}$

$\frac{4}{7}:2= \frac{4}{7}: \frac{2}{1}= \frac{4}{7}* \frac{1}{2}= \frac{2*1}{7*1}= \frac{2}{7}$

$\frac{5}{8} :10= \frac{5}{8}: \frac{10}{1}= \frac{5}{8}* \frac{1}{10}= \frac{1*1}{8*5} = \frac{1}{40}$

$\frac{15}{7}:5 = \frac{15}{7} : \frac{5}{1}= \frac{15}{7}* \frac{1}{5}= \frac{3*1}{7*1}= \frac{3}{7}$