Question

3 1/5*(-1 1/4)= -5/7+1 1/6=
36:(-4/9)= 4 2/3*(-1 4/7)=

Answer 1

Переводим смешанные дроби в неправильные:

1) $\frac{16}{5} * (-\frac{5}{4}) = -\frac{4}{1} = -4$

2) $-\frac{5}{7} + \frac{7}{6} = -\frac{30}{42} + \frac{49}{42} = \frac{79}{42} = -1\frac{36}{42}$

3) $\frac{36}{1} : (-\frac{4}{9}) = \frac{36}{1} * (-\frac{9}{4}) = -\frac{81}{1} = -81$

4) $\frac{14}{3} * (-\frac{11}{7}) = -\frac{22}{3} = -7,(3)$