1. Вычислите: a) 31 - 5 * 16 б) -43 + 11 * 8 в) (3.7 - 5.9) : 0.4 г) (-3.24 + 6.2) * 0.1 д) 2/7 + 3/8 : 7/32

Решение: a) 31 - 5 * 16 = 31 - 80 = -49 б) -43 + 11 * 8 = -43 + 88 = 45 в) (3.7 - 5.9) : 0.4 = -2.2 : 0.4 = -5.5 г) (-3.24 + 6.2) * 0.1 = 2.96 * 0.1 = 0.296 д) $$\frac{2}{7} + \frac{3}{8} : \frac{7}{32} = \frac{2}{7} + \frac{3}{8} * \frac{32}{7} = \frac{2}{7} + \frac{3 * 4}{7} = \frac{2}{7} + \frac{12}{7} = \frac{14}{7} = $$ 2