Question

Помогите решить
$\frac{25}{54} \div ( \frac{7}{12} - \frac{13}{18} ) + 2 \times 2 \frac{2}{3}$
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Answer 1

Объяснение:

$\frac{25}{54} :(\frac{7}{12}-\frac{13}{18})+2*2\frac{2}{3} .\\ 1)\ \frac{7}{12}-\frac{13}{18}=\frac{7*3-13*2}{36} =\frac{21-26}{36} =-\frac{5}{36}.\\ 2)\ \frac{25}{54} :(-\frac{5}{36})=- \frac{25}{54}* \frac{36}{5}=-\frac{10}{3}.\\ 3)\ 2*2\frac{2}{3} =2*\frac{8}{3}=\frac{16}{3}.\\ 4)\ -\frac{10}{3}+\frac{16}{3}=\frac{16-10}{3}=\frac{6}{3}=2.$