Question

(3 1/4*12-23 2/7):5,5

Answer 1

Ответ:

$(3 \frac{1}{4} \times 12 - 23 \frac{2}{7} ) \div 5.5 = ( \frac{13}{7} \times 12 - \frac{163}{7} ) \div \frac{11}{2} = (13 \times 3 \times \frac{163}{7} ) \times \frac{2}{11} = \frac{10}{7} \times 2 = \frac{20}{7}$