Вариант 6. Выполните вычитание:
- \( 7 - 4 \frac{5}{9} = 6 \frac{9}{9} - 4 \frac{5}{9} = 2 \frac{4}{9} \)
- \( 6 \frac{13}{21} + 2 \frac{9}{14} = 6 \frac{26}{42} + 2 \frac{27}{42} = 8 \frac{53}{42} = 9 \frac{11}{42} \)
- \( 4 \frac{3}{10} + 1 \frac{5}{12} = 4 \frac{18}{60} + 1 \frac{25}{60} = 5 \frac{43}{60} \)
- \( 5 \frac{1}{6} - 3 \frac{3}{4} = 5 \frac{2}{12} - 3 \frac{9}{12} = 4 \frac{14}{12} - 3 \frac{9}{12} = 1 \frac{5}{12} \)
Ответ: а) 2 4/9; б) 9 11/42; в) 5 43/60; г) 1 5/12.