Question

Помогите даю 40 баллов.

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

$\displaystyle\bf\\\frac{5}{12} \cdot\frac{2}{7} +\frac{1}{12} :3,5=\frac{5}{2\cdot 6} \cdot\frac{2}{7} +\frac{1}{12} :\frac{35}{10} =\\\\\\=\frac{5}{6} \cdot\frac{1}{7} +\frac{1}{12} :\frac{7}{2} =\frac{5}{42} +\frac{1}{12} \cdot\frac{2}{7} =\frac{5}{42}+\frac{1}{42} =\\\\\\=\frac{6}{42} =\frac{1}{7}$