Question

Решите Дроби:
а) 4 3/8*4=?
b)5 2/3*7=?
с)5 3/8+4 5/12=?
d) 7 1/6-4 2/3=?
14 7/9 :7
12 5/21 :5
7 9/11 *2
5 6/7:5

Answer 1

Ответ:

Пошаговое объяснение:

$a)4\frac{3}{8} *4=\frac{35}{8} *4=\frac{35}{2} =17\frac{1}{2} \\ \\ b)5\frac{2}{3}*7=\frac{17}{3}*7=\frac{119}{3} = 39\frac{2}{3} \\ \\ c)5\frac{3}{8} +4\frac{5}{12} =5\frac{9}{24}+4\frac{10}{24} =9\frac{19}{24}\\ \\ d)7\frac{1}{6} -4\frac{2}{3} =7\frac{1}{6} -4\frac{4}{6} =6\frac{7}{6} -4\frac{4}{6} =2\frac{3}{6} =2\frac{1}{2} \\ \\ 14\frac{7}{9} :7= \frac{133}{9} *\frac{1}{7} =\frac{19}{9} =2\frac{1}{9} \\ \\ 12\frac{5}{21} :5=\frac{257}{21}*\frac{1}{5} =\frac{257}{105} =2\frac{47}{105}$

$7\frac{9}{11} *2=14\frac{18}{11} =15\frac{7}{11} \\ \\ 5\frac{6}{7} :5=\frac{41}{7} *\frac{1}{5} =\frac{41}{35} =1\frac{6}{35}$