Найдите разность.
1) $\frac{4}{9} - (-\frac{1}{6}) = \frac{4}{9} + \frac{}{}$
2) $-\frac{5}{8} - (-\frac{7}{10}) = -\frac{5}{8} + \frac{}{}$
3) $\frac{7}{12} - \frac{17}{18}$
4) $-\frac{9}{20} - \frac{4}{15}$
5) $\frac{3}{10} - \frac{8}{15}$
6) $-\frac{11}{25} - (-\frac{3}{10})$
$\frac{4}{9} - (-\frac{1}{6}) = \frac{4}{9} + \frac{1}{6} = \frac{8}{18} + \frac{3}{18} = \frac{11}{18}$
$-\frac{5}{8} - (-\frac{7}{10}) = -\frac{5}{8} + \frac{7}{10} = -\frac{25}{40} + \frac{28}{40} = \frac{3}{40}$
$\frac{7}{12} - \frac{17}{18} = \frac{7}{12} + (-\frac{17}{18}) = \frac{21}{36} + (-\frac{34}{36}) = -\frac{13}{36}$
$-\frac{9}{20} - \frac{4}{15} = -\frac{9}{20} + (-\frac{4}{15}) = -\frac{27}{60} + (-\frac{16}{60}) = -\frac{43}{60}$
$\frac{3}{10} - \frac{8}{15} = \frac{3}{10} + (-\frac{8}{15}) = \frac{9}{30} + (-\frac{16}{30}) = -\frac{7}{30}$
$-\frac{11}{25} - (-\frac{3}{10}) = -\frac{11}{25} + \frac{3}{10} = -\frac{22}{50} + \frac{15}{50} = -\frac{7}{50}$
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