Выполните действия:
1) $5\frac{5}{9} + 3\frac{1}{6} - 6\frac{4}{27}$;
2) $1\frac{5}{7} + 3\frac{11}{14} - 2\frac{1}{4}$;
3) $12\frac{13}{48} - (9\frac{17}{32} - 4\frac{5}{24})$;
4) $(18 - 10\frac{18}{35}) - (3\frac{9}{28} + 2\frac{3}{20})$.
$5\frac{5}{9} + 3\frac{1}{6} - 6\frac{4}{27} = 5\frac{30}{54} + 3\frac{9}{54} - 6\frac{8}{54} = 2\frac{31}{54}$
$1\frac{5}{7} + 3\frac{11}{14} - 2\frac{1}{4} = 1\frac{20}{28} + 3\frac{22}{28} - 2\frac{7}{28} = 2\frac{35}{28} = 2\frac{5}{4} = 3\frac{1}{4}$
$12\frac{13}{48} - (9\frac{17}{32} - 4\frac{5}{24}) = 12\frac{26}{96} - 9\frac{51}{96} + 4\frac{20}{96} = 11\frac{122}{96} - 9\frac{51}{96} + 4\frac{20}{96} = 6\frac{91}{96}$
$(18 - 10\frac{18}{35}) - (3\frac{9}{28} + 2\frac{3}{20}) = (17\frac{35}{35} - 10\frac{18}{35}) - (3\frac{45}{140} + 2\frac{21}{140}) = 7\frac{17}{35} - 5\frac{66}{140} + 2\frac{21}{140} = 7\frac{68}{140} - 5\frac{66}{140} = 2\frac{2}{140} = 2\frac{1}{70}$
Пожауйста, оцените решение
