$$x = 5\frac{3}{16} - 2\frac{7}{16}$$ $$x = 4\frac{19}{16} - 2\frac{7}{16} = 2\frac{12}{16} = 2\frac{3}{4}$$
Проверка:
$$2\frac{3}{4} + 2\frac{7}{16} = 2\frac{12}{16} + 2\frac{7}{16} = 4\frac{19}{16} = 5\frac{3}{16}$$ Ответ: $$x = 2\frac{3}{4}$$$$x = 12\frac{1}{4} - 6\frac{3}{4}$$ $$x = 11\frac{5}{4} - 6\frac{3}{4} = 5\frac{2}{4} = 5\frac{1}{2}$$
Проверка:
$$12\frac{1}{4} - 5\frac{1}{2} = 12\frac{1}{4} - 5\frac{2}{4} = 11\frac{5}{4} - 5\frac{2}{4} = 6\frac{3}{4}$$ Ответ: $$x = 5\frac{1}{2}$$$$x = 2\frac{5}{11} + 7\frac{8}{11}$$ $$x = 9\frac{13}{11} = 10\frac{2}{11}$$
Проверка:
$$10\frac{2}{11} - 7\frac{8}{11} = 9\frac{13}{11} - 7\frac{8}{11} = 2\frac{5}{11}$$ Ответ: $$x = 10\frac{2}{11}$$$$x = 8\frac{5}{12} - 3\frac{5}{12}$$ $$x = 5$$
Проверка:
$$5 + 3\frac{5}{12} = 8\frac{5}{12}$$ Ответ: $$x = 5$$$$x = 6\frac{3}{15} - 3\frac{6}{15}$$ $$x = 5\frac{18}{15} - 3\frac{6}{15} = 2\frac{12}{15} = 2\frac{4}{5}$$
Проверка:
$$6\frac{3}{15} - 2\frac{12}{15} = 5\frac{18}{15} - 2\frac{12}{15} = 3\frac{6}{15}$$ Ответ: $$x = 2\frac{4}{5}$$Проверка:
$$( \frac{2}{31} + \frac{28}{31}) - \frac{14}{31} = \frac{30}{31} - \frac{14}{31} = \frac{16}{31}$$ Ответ: $$\frac{2}{31}$$Проверка:
$$5\frac{7}{18} - (6\frac{1}{18} - 2\frac{5}{18}) = 5\frac{7}{18} - (5\frac{19}{18} - 2\frac{5}{18}) = 5\frac{7}{18} - 3\frac{14}{18} = 4\frac{25}{18} - 3\frac{14}{18} = 1\frac{11}{18}$$ Ответ: $$6\frac{1}{18}$$Проверка:
$$3\frac{5}{17} - (\frac{9}{17} + 1\frac{4}{17}) = 3\frac{5}{17} - 1\frac{13}{17} = 2\frac{22}{17} - 1\frac{13}{17} = 1\frac{9}{17}$$ Ответ: $$\frac{9}{17}$$Проверка:
$$4\frac{9}{14} - (9\frac{3}{14} - 7\frac{3}{14}) = 4\frac{9}{14} - 2 = 2\frac{9}{14}$$ Ответ: $$9\frac{3}{14}$$