Найдите значение выражения:
а) $1\frac{2}{15} - 2\frac{3}{10} - 1\frac{1}{6}$;
б) $2\frac{5}{21} - 4\frac{1}{7} + 1\frac{1}{14}$;
в) $4\frac{2}{35} - 2\frac{5}{14} - 1\frac{3}{10}$;
г) $1\frac{2}{9} + 2\frac{5}{6} - 5\frac{1}{5}$.
$1\frac{2}{15} - 2\frac{3}{10} - 1\frac{1}{16} = 1\frac{4}{30} - 2\frac{9}{30} - 1\frac{5}{30} = -2\frac{10}{30} = -2\frac{1}{3}$
$2\frac{5}{21} - 4\frac{1}{7} + 1\frac{1}{14} = 2\frac{10}{42} - 4\frac{6}{42} + 1\frac{3}{42} = - 3\frac{48}{42} + 3\frac{13}{42} = -\frac{35}{42} = -\frac{5}{6}$
$4\frac{2}{35} - 2\frac{5}{14} - 1\frac{3}{10} = 4\frac{4}{70} - 2\frac{25}{70} - 1\frac{21}{70} = -\frac{28}{70} = -\frac{2}{5}$
$1\frac{2}{9} + 2\frac{5}{6} - 5\frac{1}{5} = 1\frac{20}{90} + 2\frac{75}{90} - 5\frac{18}{90} = -1\frac{13}{90}$
Пожауйста, оцените решение
