Выполните умножение:

Решите задачу:

$\frac{7}{9}* \frac{2}{5}= \frac{7*2}{9*5}= \frac{14}{45}$
$\frac{12}{13}* \frac{26}{27} = \frac{24}{27}$
$3 \frac{3}{5}*2 \frac{1}{12} = \frac{18}{5}* \frac{25}{12}= \frac{15}{2}=7 \frac{1}{2}$
$4 \frac{2}{7}*2 \frac{4}{5} = \frac{30}{7}* \frac{14}{5} = 12$
$2 \frac{5}{8} * \frac{4}{21}= \frac{21}{8}* \frac{4}{21}= \frac{4}{8}= \frac{1}{2}$
$\frac{6}{7} *2 \frac{13}{18} = \frac{6}{7}* \frac{49}{18}= \frac{7}{3} =2 \frac{1}{3}$