3 целых 3/8*3 целых 1\5*1целую5\12-4целых1\6*3целых1.5

1) $3 \frac{3}{8} *3 \frac{1}{5} *1 \frac{5}{12} -4 \frac{1}{6} *3 \frac{1}{5} =$ $\frac{27}{8} * \frac{16}{5} * \frac{17}{12} -\frac{25}{6} *\frac{16}{5} = \frac{9}{1} * \frac{1}{5} * \frac{17}{2} -\frac{5}{3} *\frac{8}{1} = \frac{153}{10}- \frac{40}{3} =15 \frac{3}{10} -13 \frac{1}{3} =$ $14 \frac{39}{30} -13 \frac{10}{30} =1 \frac{29}{30}$