Question

Помогите решить!!!! Дам 25 баллов!!

Answer 1

Ответ:

Пошаговое объяснение:

2 4\15-1 5\12=2 16\60-1 25\60=51\60

51\60:3 2\5=51\60*5\17=1\4

6 4\9:2=58\9*1\2=29\9=3 2\9

1\4+3 2\9=9\36+3 8\36=3 17\36

Answer 2

$\displaystyle \tt \bigg(2\frac{4}{15}-1\frac{5}{12}\bigg):3\frac{2}{5}+6\frac{4}{9}:2=3\frac{17}{36} \\\\\\1). \ 2\frac{4}{15}-1\frac{5}{12}=\frac{34}{15}-\frac{17}{12}=\frac{136-85}{60}=\frac{51}{60}=\frac{17}{20};\\\\2). \ \frac{17}{20}:3\frac{2}{5}=\frac{17}{20}:\frac{17}{5}=\frac{17}{20}\cdot\frac{5}{17}=\frac{1}{4};\\\\ 3). \ 6\frac{4}{9}:2=\frac{58}{9}:2=\frac{29}{9}=3\frac{2}{9};\\\\4). \ \frac{1}{4}+3\frac{2}{9}=\frac{9+116}{36}=\frac{125}{36}=3\frac{17}{36};$