Вариант 6. Выполните вычитание: a) 7-4\(\frac{5}{9}\) б) 6\(\frac{13}{21}\)+2\(\frac{9}{14}\) в) 4\(\frac{3}{10}\)+1\(\frac{5}{12}\) г) 5\(\frac{1}{6}\)-3\(\frac{3}{4}\)

Решение:

Вариант 6.

1. \(7 - 4\frac{5}{9} = 6\frac{9}{9} - 4\frac{5}{9} = 2\frac{4}{9}\)
2. \(6\frac{13}{21} + 2\frac{9}{14} = 6\frac{26}{42} + 2\frac{27}{42} = 8\frac{53}{42} = 9\frac{11}{42}\)
3. \(4\frac{3}{10} + 1\frac{5}{12} = 4\frac{18}{60} + 1\frac{25}{60} = 5\frac{43}{60}\)
4. \(5\frac{1}{6} - 3\frac{3}{4} = 5\frac{2}{12} - 3\frac{9}{12} = 4\frac{14}{12} - 3\frac{9}{12} = 1\frac{5}{12}\)

Ответ: а) \(2\frac{4}{9}\); б) \(9\frac{11}{42}\); в) \(5\frac{43}{60}\); г) \(1\frac{5}{12}\).