Question

(2 2/3-4 3/4)•19,2 найти значение выражения

Answer 1

$(2 \frac{2}{3}-4 \frac{3}{4})*19 \frac{1}{5}=(2 \frac{8}{12}-4 \frac{9}{12})*19 \frac{1}{5}=( \frac{32-57}{12})*19 \frac{1}{5}= \\ = (- \frac{25}{12})* \frac{96}{5}=(-5)*8=-40$