Вычислите: 4 1/6 + 2 1/3 Вычислите: 6 1/8 + 2 1/3 Вычислите: 5 4/5 - 2 3/20 Вычислите:...

Ответ:

$4 \frac{1}{6} + 2 \frac{1}{3} = (4 + 2) + ( \frac{1}{6} + \frac{1}{3}) = 6 + ( \frac{1 + 2}{6} ) = 6 + \frac{3}{6} = 6 + \frac{1}{2} = 6 \frac{1}{2}$

$5 \frac{4}{5} - 2 \frac{3}{20} = (5 - 2) + ( \frac{4}{5} - \frac{3}{20} ) = 3 + ( \frac{16 - 3}{20} ) = 3 + \frac{13}{20} = 3 \frac{13}{20}$

$6 \frac{1}{8} + 2 \frac{1}{3} = (6 + 2) + ( \frac{1}{8} + \frac{1}{3} ) = 8 + ( \frac{3 + 8}{24} ) = 8 + \frac{11}{24} = 8 \frac{11}{24}$

$4 \frac{5}{6} - 2 \frac{2}{5} = (4 - 2) + ( \frac{5}{6} - \frac{2}{5} ) = 2 + ( \frac{25 + 12}{30} ) = 2 + \frac{37}{30 } = 3 \frac{7}{30}$

$3 \frac{1}{3} - 1 \frac{3}{4} = \frac{10}{3} - \frac{7}{4} = \frac{40 - 21}{12} = \frac{19}{12} = 1 \frac{7}{12}$