Question

Вычислите:
$(1 \frac{2}{3} \times 2.2 + 1) \div 2 \frac{1}{5} - \frac{5}{11}$
Срочна............​

Answer 1

$(1 \frac{2}{3} \times 2.2 + 1) \div 2 \frac{1}{5} - \frac{5}{11} = \\ ( \frac{5}{3} \times \frac{11}{5} + 1) \div \frac{11}{5} - \frac{5}{11} = \\ ( \frac{1}{3} \times 11 + 1) \times \frac{5}{11} - \frac{5}{11} = \\ ( \frac{11}{ 3} + 1) \times \frac{5}{11} - \frac{5}{11} = \\ \frac{14}{3} \times \frac{5}{11} - \frac{5}{11} = \\ \frac{70}{33} - \frac{5}{11} = \\ \frac{5}{3} = 1 \frac{2}{3} = 1.6$