Ответ:
а) \(6\frac{1}{3}-8=\frac{19}{3}-\frac{24}{3}=-\frac{5}{3}=-1\frac{2}{3}\).
б) \(-2\frac{2}{7}+4\frac{3}{5}=-\frac{16}{7}+\frac{23}{5}=\frac{-80+161}{35}=\frac{81}{35}=2\frac{11}{35}\).
в) \(5\frac{1}{3}-6\frac{1}{4}=\frac{16}{3}-\frac{25}{4}=\frac{64-75}{12}=-\frac{11}{12}\).
г) \(\frac{3}{8}\cdot\left(-\frac{9}{16}\right)=-\frac{27}{128}\).
д) \(\frac{5}{12}\cdot(-6)=-\frac{30}{12}=-\frac{5}{2}=-2\frac{1}{2}\).
е) \(-3\frac{2}{3}:3=-\frac{11}{3}\cdot\frac{1}{3}=-\frac{11}{9}=-1\frac{2}{9}\).
ж) \(\frac{4}{7}\cdot(-49)=-28\).
з) \(-16:\left(-\frac{4}{9}\right)=16\cdot\frac{9}{4}=36\).
и) \(-3\frac{1}{2}\cdot\left(-1\frac{3}{7}\right)=\frac{7}{2}\cdot\frac{10}{7}=5\).
