Реши пример г) $$\frac{3}{8} : \left(-\frac{9}{16}\right)$$

- г) $$\frac{3}{8} : \left(-\frac{9}{16}\right) = \frac{3}{8} \cdot \left(-\frac{16}{9}\right) = -\frac{3 \cdot 16}{8 \cdot 9} = -\frac{48}{72} = -\frac{2}{3}$$ - д) $$\frac{5}{12} \cdot (-6) = -\frac{5 \cdot 6}{12} = -\frac{30}{12} = -\frac{5}{2} = -2\frac{1}{2}$$ - e) $$-3 \frac{2}{9} \cdot 3 = -\frac{29}{9} \cdot 3 = -\frac{29 \cdot 3}{9} = -\frac{87}{9} = -\frac{29}{3} = -9\frac{2}{3}$$ - ж) $$\frac{4}{7} \cdot (-49) = -\frac{4 \cdot 49}{7} = -\frac{196}{7} = -28$$ - з) $$-16 : \left(-\frac{4}{9}\right) = -16 \cdot \left(-\frac{9}{4}\right) = \frac{16 \cdot 9}{4} = \frac{144}{4} = 36$$ - и) $$-3 \frac{1}{2} \cdot \left(-1\frac{3}{7}\right) = -\frac{7}{2} \cdot \left(-\frac{10}{7}\right) = \frac{7 \cdot 10}{2 \cdot 7} = \frac{70}{14} = 5$$