Вычислите:a)5/32*48:b)8/51*17/20:в)15:1 2/3;г)(7 1/6-2 5/8)*12:д)(1/7+2 2/3):5/7:

А) $\frac{5}{32} *48= \frac{15}{2} =7,5$
б) $\frac{8}{51} * \frac{17}{20} = \frac{2}{15}$
в) $15/ \frac{5}{3} =15* \frac{3}{5} =9$
г) $(\frac{43}{6} - \frac{21}{8})*12 =( \frac{172}{24} - \frac{63}{24})*12 = \frac{109}{24}*12 = \frac{109}{2} =54,5$
д) $(\frac{1}{7} + \frac{8}{3} )/ \frac{5}{7} =( \frac{3}{21} + \frac{56}{21} )/ \frac{5}{7} = \frac{59}{21} * \frac{7}{5} = \frac{59}{15} =3 \frac{14}{15}$