Выполните умножение: 5 1/6 х 6 2 2/7 х 7 11 1/8 х 4 6 1/9 х 18 (5/8 + 3/16)х 16...

Решите задачу:

$1)5 \frac{1}{6} * 6= \frac{31}{6} * \frac{6}{1}=31$
$2)2 \frac{2}{7} * 7= \frac{16}{7} * \frac{7}{1}=16$
$3)11 \frac{1}{8} *4= \frac{89}{8} * \frac{4}{1} = \frac{89}{2}= 44\frac{1}{2}$
$4)6\frac{1}{9} *18= \frac{55}{9}* \frac{18}{1}= \frac{55}{1}* \frac{2}{1} =110$
$5)( \frac{5}{8} + \frac{3}{16})*16=( \frac{10}{16}+ \frac{3}{16})*16= \frac{13}{16} *16= \frac{13}{16}* \frac{16}{1}=13$
$6)( \frac{8}{21}- \frac{3}{14})*42= ( \frac{16}{42} - \frac{9}{42})*42= \frac{7}{42}*42= \frac{7}{42}* \frac{42}{1}=7$