Question

Вычислите...............

Answer 1

$2.2 + ( - 4 \frac{1}{3} ) + ( - 1 \frac{13}{15} ) = 2.2 - \frac{13}{3} - \frac{28}{15} = \frac{22}{10} - \frac{13}{3} - \frac{28}{15} = \frac{66 - 130}{30} - \frac{28}{15} = - \frac{64}{ 30} - \frac{28}{15} = \frac{ - 64 - 56}{30} = - \frac{120}{30} = - \frac{120 \div 30}{30 \div 30} = - \frac{4}{1} = - 4$