6) 1$$\frac{2}{3}$$+2$$\frac{1}{4}$$= 7) 3$$\frac{3}{4}$$+2$$\frac{1}{6}$$= 8) 1$$\frac{4}{5}$$+$$\frac{2}{3}$$= 9) 4$$\frac{6}{7}$$-1$$\frac{11}{15}$$= 10) 5$$\frac{1}{4}$$-1$$\frac{4}{5}$$= 6) 1$$\frac{8}{9}$$+2$$\frac{5}{8}$$= 7) 2$$\frac{4}{5}$$+$$\frac{2}{3}$$= 8) 3$$\frac{7}{9}$$-1$$\frac{5}{8}$$= 9) 2$$\frac{14}{15}$$-1$$\frac{7}{10}$$= 10) 8$$\frac{6}{7}$$-5$$\frac{13}{14}$$=

Решим примеры.

1. 6) $$1\frac{2}{3} + 2\frac{1}{4} = 1\frac{8}{12} + 2\frac{3}{12} = 3\frac{11}{12}$$

   Ответ: 3$$\frac{11}{12}$$

2. 7) $$3\frac{3}{4} + 2\frac{1}{6} = 3\frac{9}{12} + 2\frac{2}{12} = 5\frac{11}{12}$$

   Ответ: 5$$\frac{11}{12}$$

3. 8) $$1\frac{4}{5} + \frac{2}{3} = 1\frac{12}{15} + \frac{10}{15} = 1\frac{22}{15} = 2\frac{7}{15}$$

   Ответ: 2$$\frac{7}{15}$$

4. 9) $$4\frac{6}{7} - 1\frac{11}{15} = 4\frac{90}{105} - 1\frac{77}{105} = 3\frac{13}{105}$$

   Ответ: 3$$\frac{13}{105}$$

5. 10) $$5\frac{1}{4} - 1\frac{4}{5} = 5\frac{5}{20} - 1\frac{16}{20} = 4\frac{25}{20} - 1\frac{16}{20} = 3\frac{9}{20}$$

   Ответ: 3$$\frac{9}{20}$$

6. 6) $$1\frac{8}{9} + 2\frac{5}{8} = 1\frac{64}{72} + 2\frac{45}{72} = 3\frac{109}{72} = 4\frac{37}{72}$$

   Ответ: 4$$\frac{37}{72}$$

7. 7) $$2\frac{4}{5} + \frac{2}{3} = 2\frac{12}{15} + \frac{10}{15} = 2\frac{22}{15} = 3\frac{7}{15}$$

   Ответ: 3$$\frac{7}{15}$$

8. 8) $$3\frac{7}{9} - 1\frac{5}{8} = 3\frac{56}{72} - 1\frac{45}{72} = 2\frac{11}{72}$$

   Ответ: 2$$\frac{11}{72}$$

9. 9) $$2\frac{14}{15} - 1\frac{7}{10} = 2\frac{28}{30} - 1\frac{21}{30} = 1\frac{7}{30}$$

   Ответ: 1$$\frac{7}{30}$$

10. 10) $$8\frac{6}{7} - 5\frac{13}{14} = 8\frac{12}{14} - 5\frac{13}{14} = 7\frac{26}{14} - 5\frac{13}{14} = 2\frac{13}{14}$$

    Ответ: 2$$\frac{13}{14}$$