Đáp án:
Giải thích các bước giải:
$G = \frac{ \frac{1}{2} + \frac{1}{3} - \frac{1}{6} }{ \frac{5}{2} + \frac{5}{3} - \frac{5}{6} } \\\Leftrightarrow G = \frac{ \frac{1}{2} + \frac{1}{3} + \frac{1}{6} }{ 5 ( \frac{1}{2} + \frac{1}{3} + \frac{1}{6} ) } \\\Leftrightarrow G = \frac{1}{5} $
2)
$ K = ( \frac{10}{3} \times 10,9 + 9,5 \div \frac{13}{4} ) \times ( \frac{62}{75} - \frac{4}{25} ) \\\Leftrightarrow K = \frac{1531}{39} \times \frac{2}{3} \\\Leftrightarrow K = \frac{3062}{117} $