Вычислите разность:
а) $2\frac{1}{6} - \frac{1}{3}$;
б) $3\frac{1}{5} - 1\frac{1}{4}$;
в) $4\frac{2}{3} - \frac{6}{7}$;
г) $10\frac{2}{5} - 5\frac{2}{3}$.
$2\frac{1}{6} - \frac{1}{3} = 2\frac{1}{6} - \frac{2}{6} = (2\frac{1}{6} - 1) + \frac{4}{6} = 1\frac{1}{6} + \frac{4}{6} = 1\frac{5}{6}$
$3\frac{1}{5} - 1\frac{1}{4} = 2\frac{4}{20} - \frac{5}{20} = (2\frac{4}{20} - 1) + \frac{15}{20} = 1\frac{4}{20} + \frac{15}{20} = 1\frac{19}{20}$
$4\frac{2}{3} - \frac{6}{7} = 4\frac{14}{21} - \frac{18}{21} = (4\frac{14}{21} - 1) + \frac{3}{21} = 3\frac{14}{21} + \frac{3}{21} = 3\frac{17}{21}$
$10\frac{2}{5} - 5\frac{2}{3} = 5\frac{6}{15} - \frac{10}{15} = (5\frac{6}{15} - 1) + \frac{5}{15} = 4\frac{6}{15} + \frac{5}{15} = 4\frac{11}{15}$
Пожауйста, оцените решение
