Question

Обчисліть
21/40:3/4
1 5/9: 1 8/27
12:15/16
9/17:6

Answer 1

Ответ:

$1)\frac{21}{40} :\frac{3}{4} =\frac{21}{40} *\frac{4}{3} =\frac{21*4}{40*3}=\frac{7}{10}$

$2)1\frac{5}{9} : 1 \frac{8}{27} = \frac{14}{9} : \frac{35}{27}= \frac{14}{9} * \frac{27}{35}=\frac{14*27}{9*35} =\frac{2*3}{5} =\frac{6}{5} = 1\frac{1}{5}$

$3)12:\frac{15}{16} = 12*\frac{16}{15} =\frac{12*16}{15} =\frac{4*16}{5} =\frac{64}{5} =12\frac{4}{5}$

$4)\frac{9}{17} :6=\frac{9}{17} *\frac{1}{6} = \frac{9}{17*6} = \frac{3}{17*2} =\frac{3}{34}$

Пошаговое объяснение: