Выполните вычитание:
1) $\frac{7}{8} - (-\frac{3}{10})$;
2) $\frac{11}{12} - \frac{17}{18}$;
3) $-\frac{3}{7} - \frac{9}{14}$;
4) $-\frac{5}{9} - (-\frac{3}{4})$;
5) $3\frac{11}{12} - (-4\frac{4}{9})$;
6) $4\frac{5}{17} - 6$;
7) $1\frac{3}{8} - 3\frac{1}{4}$;
8) $-2\frac{14}{15} - 1\frac{19}{45}$;
9) $-3\frac{1}{6} - (-1\frac{1}{4})$.
$\frac{7}{8} - (-\frac{3}{10}) = \frac{7}{8} + \frac{3}{10} = \frac{35}{40} + \frac{12}{40} = \frac{47}{40} = 1\frac{7}{40}$
$\frac{11}{12} - \frac{17}{18} = \frac{33}{36} - \frac{34}{36} = -\frac{1}{36}$
$-\frac{3}{7} - \frac{9}{14} = -\frac{6}{14} - \frac{9}{14} = -\frac{15}{14} = -1\frac{1}{14}$
$-\frac{5}{9} - (-\frac{3}{4}) = -\frac{5}{9} + \frac{3}{4} = -\frac{20}{36} + \frac{27}{36} = \frac{7}{36}$
$3\frac{11}{12} - (-4\frac{4}{9}) = 3\frac{11}{12} + 4\frac{4}{9} = 3\frac{33}{36} + 4\frac{16}{36} = 7\frac{49}{36} = 8\frac{13}{36}$
$4\frac{5}{17} - 6 = 4\frac{5}{17} - 5\frac{17}{17} = 1\frac{12}{17}$
$1\frac{3}{8} - 3\frac{1}{4} = 1\frac{3}{8} - 3\frac{2}{8} = 1\frac{3}{8} - 2\frac{10}{8} = -1\frac{7}{8}$
$-2\frac{14}{15} - 1\frac{19}{45} = -2\frac{42}{45} - 1\frac{19}{45} = -3\frac{61}{45} = -4\frac{16}{45}$
$-3\frac{1}{6} - (-1\frac{1}{4}) = -3\frac{1}{6} + 1\frac{1}{4} = -3\frac{2}{12} + 1\frac{3}{12} = -2\frac{14}{12} + 1\frac{3}{12} = -1\frac{11}{12}$
Пожауйста, оцените решение