1. Выполните действия: а) 6 5/12 + 3 3/8 =

### 1. Выполните действия **Левый столбец:** а) $6\frac{5}{12} + 3\frac{3}{8} = 6\frac{10}{24} + 3\frac{9}{24} = 9\frac{19}{24}$ б) $2\frac{11}{20} + 4\frac{19}{30} = 2\frac{33}{60} + 4\frac{38}{60} = 6\frac{71}{60} = 7\frac{11}{60}$ в) $3 - \frac{18}{19} = 2\frac{19}{19} - \frac{18}{19} = 2\frac{1}{19}$ г) $5\frac{6}{7} - 3\frac{1}{14} = 5\frac{12}{14} - 3\frac{1}{14} = 2\frac{11}{14}$ д) $2\frac{3}{10} - 1\frac{7}{15} = 2\frac{9}{30} - 1\frac{14}{30} = 1\frac{39}{30} - 1\frac{14}{30} = \frac{25}{30} = \frac{5}{6}$ e) $10 - 2\frac{2}{9} = 9\frac{9}{9} - 2\frac{2}{9} = 7\frac{7}{9}$ **Правый столбец:** a) $3\frac{7}{8} + 4\frac{5}{12} = 3\frac{21}{24} + 4\frac{10}{24} = 7\frac{31}{24} = 8\frac{7}{24}$ б) $4\frac{3}{14} + 3\frac{2}{21} = 4\frac{9}{42} + 3\frac{4}{42} = 7\frac{13}{42}$ в) $2 - \frac{14}{17} = 1\frac{17}{17} - \frac{14}{17} = 1\frac{3}{17}$ г) $4\frac{8}{15} - 2\frac{1}{30} = 4\frac{16}{30} - 2\frac{1}{30} = 2\frac{15}{30} = 2\frac{1}{2}$ д) $8\frac{1}{10} - 3\frac{1}{6} = 8\frac{3}{30} - 3\frac{5}{30} = 7\frac{33}{30} - 3\frac{5}{30} = 4\frac{28}{30} = 4\frac{14}{15}$ e) $11 - 7\frac{4}{7} = 10\frac{7}{7} - 7\frac{4}{7} = 3\frac{3}{7}$ ### 2. Решите уравнения **Левый столбец:** a) $x + 2\frac{2}{3} = 6 \implies x = 6 - 2\frac{2}{3} = 3\frac{1}{3}$ б) $6\frac{5}{12} - y = 3\frac{1}{4} \implies y = 6\frac{5}{12} - 3\frac{3}{12} = 3\frac{2}{12} = 3\frac{1}{6}$ **Правый столбец:** a) $x + 4\frac{3}{4} = 7 \implies x = 7 - 4\frac{3}{4} = 2\frac{1}{4}$ б) $7\frac{3}{11} - y = 3\frac{1}{4} \implies y = 7\frac{3}{11} - 3\frac{1}{4} = 7\frac{12}{44} - 3\frac{11}{44} = 4\frac{1}{44}$