Question

(2 1/4+4 5/6):3 2/5-3/4:3/5
Срочно, помогите! ​

Answer 1

Ответ:

$\displaystyle(2\frac{1}{4} +4\frac{5}{6} ):3\frac{2}{5} -\frac{3}{4} :\frac{3}{5} =\frac{5}{6}$

Пошаговое объяснение:

$\displaystyle1)2\frac{1}{4} +4\frac{5}{6} =\frac{9}{4} +\frac{29}{6} =\frac{27}{12} +\frac{58}{12} =\frac{85}{12}$

$\displaystyle2) \frac{85}{12} :3\frac{2}{5} =\frac{85}{12} :\frac{17}{5} =\frac{85}{12} *\frac{5}{17} =\frac{25}{12}$

$3)\displaystyle-\frac{3}{4} :\frac{3}{5} =-\frac{3}{4} *\frac{5}{3} =-\frac{5}{4}$

$\displaystyle4)\frac{25}{12} -\frac{5}{4} =\frac{25}{12} -\frac{15}{12} =\frac{10}{12} =\frac{5}{6}$