Решение заданий на сложение и вычитание дробей

Столбец A

1. rac{1}{3} + rac{1}{6} = rac{2}{6} + rac{1}{6} = rac{3}{6} = rac{1}{2}
2. rac{1}{2} + rac{1}{3} = rac{3}{6} + rac{2}{6} = rac{5}{6}
3. rac{3}{5} - rac{1}{10} = rac{6}{10} - rac{1}{10} = rac{5}{10} = rac{1}{2}
4. rac{1}{12} + rac{5}{6} = rac{1}{12} + rac{10}{12} = rac{11}{12}
5. rac{1}{3} + rac{1}{4} = rac{4}{12} + rac{3}{12} = rac{7}{12}
6. rac{1}{3} + rac{2}{5} = rac{5}{15} + rac{6}{15} = rac{11}{15}
7. rac{1}{2} - rac{1}{4} = rac{2}{4} - rac{1}{4} = rac{1}{4}
8. rac{8}{7} - 1 = rac{8}{7} - rac{7}{7} = rac{1}{7}
9. rac{1}{4} - rac{1}{5} = rac{5}{20} - rac{4}{20} = rac{1}{20}
10. rac{1}{2} + rac{3}{7} = rac{7}{14} + rac{6}{14} = rac{13}{14}

Столбец Б

1. rac{1}{3} - rac{1}{6} = rac{2}{6} - rac{1}{6} = rac{1}{6}
2. rac{3}{20} + rac{3}{4} = rac{3}{20} + rac{15}{20} = rac{18}{20} = rac{9}{10}
3. rac{7}{9} - rac{2}{3} = rac{7}{9} - rac{6}{9} = rac{1}{9}
4. rac{1}{4} + rac{1}{5} = rac{5}{20} + rac{4}{20} = rac{9}{20}
5. rac{2}{5} + rac{4}{15} = rac{6}{15} + rac{4}{15} = rac{10}{15} = rac{2}{3}
6. rac{1}{3} + rac{1}{4} = rac{4}{12} + rac{3}{12} = rac{7}{12}
7. rac{2}{3} - rac{2}{5} = rac{10}{15} - rac{6}{15} = rac{4}{15}
8. rac{1}{5} - rac{1}{6} = rac{6}{30} - rac{5}{30} = rac{1}{30}
9. rac{1}{2} + rac{1}{4} = rac{2}{4} + rac{1}{4} = rac{3}{4}
10. rac{7}{6} - 1 = rac{7}{6} - rac{6}{6} = rac{1}{6}