Найдите значение выражения:
а) $5\frac{5}{12} - 2\frac{5}{9}$;
б) $8\frac{1}{4} - 7\frac{5}{18}$;
в) $4\frac{7}{12} - 1\frac{5}{8}$;
г) $3\frac{7}{18} - 2\frac{8}{15}$.
$5\frac{5}{12} - 2\frac{5}{9} = 3\frac{15}{36} - \frac{20}{36} = (3\frac{15}{36} - 1) + \frac{16}{36} = 2\frac{15}{36} + \frac{16}{36} = 2\frac{31}{36}$
$8\frac{1}{4} - 7\frac{5}{18} = 1\frac{9}{36} - \frac{10}{36} = (1\frac{9}{36} - 1) + \frac{26}{36} = \frac{9}{36} + \frac{26}{36} = \frac{35}{36}$
$4\frac{7}{12} - 1\frac{5}{8} = 3\frac{14}{24} - \frac{15}{24} = (3\frac{14}{24} - 1) + \frac{9}{24} = 2\frac{14}{24} + \frac{9}{24} = 2\frac{23}{24}$
$3\frac{7}{18} - 2\frac{8}{15} = 1\frac{35}{90} - \frac{48}{90} = (1\frac{35}{90} - 1) + \frac{42}{90} = \frac{35}{90} + \frac{42}{90} = \frac{77}{90}$
Пожауйста, оцените решение