Вычислить: g) -2 5/8 + (-3 1/6) = ? e) -2/3 + (-5/6) = ? f) -3/14 + (-2/21) = ?

g) $$-2\frac{5}{8} + (-3\frac{1}{6}) = -(\frac{21}{8} + \frac{19}{6}) = -(\frac{63}{24} + \frac{76}{24}) = -\frac{139}{24} = -5\frac{19}{24}$$ e) $$-\frac{2}{3} + (-\frac{5}{6}) = -(\frac{4}{6} + \frac{5}{6}) = -\frac{9}{6} = -\frac{3}{2} = -1\frac{1}{2}$$ f) $$-\frac{3}{14} + (-\frac{2}{21}) = -(\frac{9}{42} + \frac{4}{42}) = -\frac{13}{42}$$