4. Вычислите: 1) $\left(\frac{5}{12}+\frac{1}{8}\right):\frac{3}{8}$; 2) $\frac{5}{12}+\frac{1}{8}:\frac{3}{8}$; 3) $\left(\frac{11}{18}-\frac{4}{9}\right)\cdot\frac{3}{16}$; 4) $\frac{11}{18}-\frac{4}{9}\cdot\frac{3}{16}$.

Question

$Фото задания: 4. Вычислите: 1) $\left(\frac{5}{12}+\frac{1}{8}\right):\frac{3}{8}$; 2) $\frac{5}{12}+\frac{1}{8}:\frac{3}{8}$; 3)…$ Фото задания

Accepted Answer

$\left(\frac{5}{12}+\frac{1}{8}\right):\frac{3}{8}=\left(\frac{10}{24}+\frac{3}{24}\right)\cdot\frac{8}{3}=\frac{13}{24}\cdot\frac{8}{3}=\frac{13}{9}=1\frac{4}{9}$.
$\frac{5}{12}+\frac{1}{8}:\frac{3}{8}=\frac{5}{12}+\frac{1}{8}\cdot\frac{8}{3}=\frac{5}{12}+\frac{1}{3}=\frac{9}{12}=\frac{3}{4}$.
$\left(\frac{11}{18}-\frac{4}{9}\right)\cdot\frac{3}{16}=\left(\frac{11}{18}-\frac{8}{18}\right)\cdot\frac{3}{16}=\frac{1}{6}\cdot\frac{3}{16}=\frac{1}{32}$.
$\frac{11}{18}-\frac{4}{9}\cdot\frac{3}{16}=\frac{11}{18}-\frac{1}{12}=\frac{22}{36}-\frac{3}{36}=\frac{19}{36}$.

Ответ: 1) $1\frac{4}{9}$; 2) $\frac{3}{4}$; 3) $\frac{1}{32}$; 4) $\frac{19}{36}$.

4. Вычислите: 1) \(\left(\frac{5}{12}+\frac{1}{8}\right):\frac{3}{8}\); 2) \(\frac{5}{12}+\frac{1}{8}:\frac{3}{8}\); 3) \(\left(\frac{11}{18}-\frac{4}{9}\right)\cdot\frac{3}{16}\); 4) \(\frac{11}{18}-\frac{4}{9}\cdot\frac{3}{16}\).