Выполните умножение:
а) $6\frac{1}{5} * 4$;
б) $9\frac{2}{7} * 2$;
в) $3 * 7\frac{1}{4}$;
г) $6 * 1\frac{1}{7}$;
д) $4\frac{1}{4} * 4$;
е) $2\frac{1}{8} * 8$;
ж) $10 * 5\frac{2}{5}$;
з) $11\frac{1}{3} * 3$;
и) $27\frac{4}{9} * 9$;
к) $12\frac{9}{13} * 13$.
$6\frac{1}{5} * 4 = 6 * 4 + \frac{1}{5} * 4 = 24 + \frac{4}{5} = 24\frac{4}{5}$
$9\frac{2}{7} * 2 = 9 * 2 + \frac{2}{7} * 2 = 18 + \frac{4}{7} = 18\frac{4}{7}$
$3 * 7\frac{1}{4} = 3 * 7 + 3 * \frac{1}{4} = 21 + \frac{3}{4} = 21\frac{3}{4}$
$6 * 1\frac{1}{7} = 6 * 1 + 6 * \frac{1}{7} = 6 + \frac{6}{7} = 6\frac{6}{7}$
$4\frac{1}{4} * 4 = 4 * 4 + \frac{1}{4} * 4 = 16 + 1 = 17$
$2\frac{1}{8} * 8 = 2 * 8 + \frac{1}{8} * 8 = 16 + 1 = 17$
$10 * 5\frac{2}{5} = 10 * 5 + 10 * \frac{2}{5} = 50 + 4 = 54$
$11\frac{1}{3} * 3 = 11 * 3 + \frac{1}{3} * 3 = 33 + 1 = 34$
$27\frac{4}{9} * 9 = 27 * 9 + \frac{4}{9} * 9 = 243 + 4 = 247$
$12\frac{9}{13} * 13 = 12 * 13 + \frac{9}{13} * 13 = 156 + 9 = 165$
Пожауйста, оцените решение