Question

Вычислите (1 2/3 + 2 5/9) : (-21 3/4 + 7 1/2)​

Answer 1

$1 \times \frac{2}{3} + 2 \times \frac{5}{9} \div - 21 \times \frac{3}{4} + 7 \times \frac{1}{2}$

$1 \times \frac{6}{9} + 2 \times \frac{5}{9} \div - 21 \times \frac{3}{4} + 7 \times \frac{2}{4}$

$3 \times \frac{11}{9} \div - 14 \times \frac{1}{4}$

$- \frac{38}{9} \div \frac{57}{4} = \frac{8}{27}$