Question

Помогите решить(по действиям)​

Answer 1

Ответ:

$2 \frac{7}{12} + 4 \frac{9}{12} - 3 \frac{6}{12} = 3 \frac{7 + 9 - 6}{12} = 3 \frac{10}{12} = 3 \frac{5}{6}$

$\frac{5}{6} \div 3 \frac{5}{6} = \frac{5}{6} \div \frac{23}{6} = \frac{5 \times 6}{6 \times 23} = \frac{5}{23}$

$\frac{5}{23} \div \frac{5}{19} = \frac{5 \times 19}{23 \times 5} = \frac{19}{23}$

Answer 2

Ответ:

19/23

Пошаговое объяснение:

$2\frac{7}{12}+4\frac{3}{4}-3\frac{1}{2}=\frac{31}{12}+\frac{19}{4}-\frac{7}{2}=\frac{31}{12}+\frac{57}{12}-\frac{42}{12}=\frac{46}{12}=\frac{23}{6}\\\frac{5}{6}:\frac{23}{6}=\frac{5}{6}*\frac{6}{23}=\frac{5}{23}\\\\\frac{5}{23}:\frac{5}{19}=\frac{5}{23}*\frac{19}{5}=\frac{19}{23}$