Выполните сложение: Вариант 4 1) 1/2 + 3/4 = 2) 6/7 + 5/14 = 3) 2/3 + 7/12 = 4) 4/5 + 3/20 = 5) 4/9 + 7/18 = 6) 9/10 + 4/15 = 7) 5/6 + 3/14 = 8) 5/12 + 1/18 = 9) 1/8 + 3/12 = 10) 3/4 + 1/6 =

Решим примеры на сложение дробей:

1. $$ \frac{1}{2} + \frac{3}{4} = \frac{2}{4} + \frac{3}{4} = \frac{2+3}{4} = \frac{5}{4} = 1\frac{1}{4} $$

   Ответ: $$1\frac{1}{4}$$

2. $$ \frac{6}{7} + \frac{5}{14} = \frac{12}{14} + \frac{5}{14} = \frac{12+5}{14} = \frac{17}{14} = 1\frac{3}{14} $$

   Ответ: $$1\frac{3}{14}$$

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

   Ответ: $$1\frac{1}{4}$$

4. $$ \frac{4}{5} + \frac{3}{20} = \frac{16}{20} + \frac{3}{20} = \frac{16+3}{20} = \frac{19}{20} $$

   Ответ: $$\frac{19}{20}$$

5. $$ \frac{4}{9} + \frac{7}{18} = \frac{8}{18} + \frac{7}{18} = \frac{8+7}{18} = \frac{15}{18} = \frac{5}{6} $$

   Ответ: $$\frac{5}{6}$$

6. $$ \frac{9}{10} + \frac{4}{15} = \frac{27}{30} + \frac{8}{30} = \frac{27+8}{30} = \frac{35}{30} = \frac{7}{6} = 1\frac{1}{6} $$

   Ответ: $$1\frac{1}{6}$$

7. $$ \frac{5}{6} + \frac{3}{14} = \frac{35}{42} + \frac{9}{42} = \frac{35+9}{42} = \frac{44}{42} = \frac{22}{21} = 1\frac{1}{21} $$

   Ответ: $$1\frac{1}{21}$$

8. $$ \frac{5}{12} + \frac{1}{18} = \frac{15}{36} + \frac{2}{36} = \frac{15+2}{36} = \frac{17}{36} $$

   Ответ: $$\frac{17}{36}$$

9. $$ \frac{1}{8} + \frac{3}{12} = \frac{1}{8} + \frac{1}{4} = \frac{1}{8} + \frac{2}{8} = \frac{1+2}{8} = \frac{3}{8} $$

   Ответ: $$\frac{3}{8}$$

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

    Ответ: $$\frac{11}{12}$$