Ответ:
- а) \(4+5\frac{1}{4}=9\frac{1}{4}\).
- б) \(1\frac{2}{9}+3\frac{1}{3}=1\frac{2}{9}+3\frac{3}{9}=4\frac{5}{9}\).
- в) \(1\frac{3}{5}+2\frac{2}{3}=3+\frac{3}{5}+\frac{2}{3}=3+\frac{9}{15}+\frac{10}{15}=4\frac{4}{15}\).
- г) \(5\frac{3}{4}-2=3\frac{3}{4}\).
- д) \(3-\frac{5}{7}=\frac{21}{7}-\frac{5}{7}=\frac{16}{7}=2\frac{2}{7}\).
- е) \(4-1\frac{7}{9}=4\frac{0}{9}-1\frac{7}{9}=2\frac{9}{9}-\frac{7}{9}=2\frac{2}{9}\).
- ж) \(3\frac{2}{5}-\frac{3}{5}=3-\frac{1}{5}=2\frac{4}{5}\).
- з) \(4\frac{1}{3}-1\frac{1}{2}=3+\frac{1}{3}-\frac{1}{2}=3-\frac{1}{6}=2\frac{5}{6}\).
Ответ: а) \(9\frac{1}{4}\); б) \(4\frac{5}{9}\); в) \(4\frac{4}{15}\); г) \(3\frac{3}{4}\); д) \(2\frac{2}{7}\); е) \(2\frac{2}{9}\); ж) \(2\frac{4}{5}\); з) \(2\frac{5}{6}\).
