Question

решите #927
математика 6 класс рациональные числа​

Answer 1

а) $-\frac{1}{3} * 2 = -\frac{2}{3}$

б) $\frac{2}{5} * (-7) = -\frac{2*7}{5} = -\frac{14}{5} = -2\frac{4}{5}$

в) $-\frac{4}{9} * \frac{3}{8} = -\frac{4*3}{9*8} = -\frac{1}{6}$

г) $-\frac{7}{8} * (-\frac{2}{7}) = \frac{7*2}{8*7} = \frac{1}{4}$

д) $-1\frac{1}{2} * \frac{2}{3} = -\frac{3}{2} * \frac{2}{3} = -1$

е) $2\frac{1}{5} * (-\frac{3}{22}) = \frac{11}{5} * (-\frac{3}{22}) = -\frac{11*3}{5*22} = -\frac{3}{10}$