8. Закончите записи: а) 5 4/7 + 8 3/7 = 13 7/7 = ...; б) 6 2/9 + 2 8/9 = 8 10/9 = 8 + 1 1/9 = ...; в) 5 7/8 + 2 3/8 = 7 + ...; г) 6 8/9 + 4/9 = 6 + ...; д) 8 6/10 − 3 7/10 = 7 16/10 − 3 7/10 = 4 + ...; е) 5 8/10 − 2 9/10 = 4 18/10 − 2 9/10 = ...; ж) 7 5/8 + 3 4/8 = ...; з) 9 3/14 − 7 5/14 = ...; и) 2 2/5 + 3 3/5 = ...; к) 4 3/7 − 2 3/7 = ....

Question

Вопрос:

Accepted Answer

а) \(5\frac{4}{7}+8\frac{3}{7}=13\frac{7}{7}=14\);
б) \(6\frac{2}{9}+2\frac{8}{9}=8\frac{10}{9}=8+1\frac{1}{9}=9\frac{1}{9}\);
в) \(5\frac{7}{8}+2\frac{3}{8}=7+\frac{10}{8}=7+1\frac{2}{8}=8\frac{1}{4}\);
г) \(6\frac{8}{9}+\frac{4}{9}=6+\frac{12}{9}=6+1\frac{1}{3}=7\frac{1}{3}\);
д) \(8\frac{6}{10}-3\frac{7}{10}=7\frac{16}{10}-3\frac{7}{10}=4+\frac{9}{10}=4\frac{9}{10}\);
е) \(5\frac{8}{10}-2\frac{9}{10}=4\frac{18}{10}-2\frac{9}{10}=2\frac{9}{10}\);
ж) \(7\frac{5}{8}+3\frac{4}{8}=10\frac{9}{8}=11\frac{1}{8}\);
з) \(9\frac{3}{14}-7\frac{5}{14}=8\frac{17}{14}-7\frac{5}{14}=1\frac{12}{14}=1\frac{6}{7}\);
и) \(2\frac{2}{5}+3\frac{3}{5}=5\frac{5}{5}=6\);
к) \(4\frac{3}{7}-2\frac{3}{7}=2\).

Ответ: