Question

697. Вычислите: 3 1 8 1 12 1) 12 1 S 1 6 ; 2) 21 4 6 9 7 3 9 12 1 18 3) 1 18 4 3 9 14 1 2​

Answer 1

1)

$\displaystyle\frac{\frac{3}{8}+\frac{1}{12}+\frac{1}{6}}{\frac{1}{12}+\frac{1}{3}+\frac{5}{6}}$

$\displaystyle\frac{\frac{9}{24}+\frac{2}{24}+\frac{4}{24}}{\frac{1}{12}+\frac{4}{12}+\frac{10}{12}}$

$\displaystyle\frac{\frac{15}{24}}{\frac{15}{12}}$

$\displaystyle\frac{15}{24}$ $:$ $\displaystyle\frac{15}{12}=$ $\displaystyle\frac{15}{24} *\frac{12}{15}=$ $\displaystyle\frac{15*12}{24*15}=$ $\displaystyle\frac{1*1}{2*1}=$  $\displaystyle\frac{1}{2} (0.5)$

Ответ: 0.5

Удачи!!!