Question

suma y resta combinadas de quebrados homogeneos

Answer 1

$\frac{2}{13} + \frac{4}{13} +\frac{5}{13} + \frac{1}{13} = \frac{2+4+5+1}{13} =\frac{12}{13}$

$\frac{5}{6} -\frac{2}{6} -\frac{7}{6} + \frac{4}{6} = \frac{5}{6} + \frac{4}{6} - \frac{2}{6} - \frac{7}{6} = \frac{9}{6}- \frac{9}{6}= \frac{9-9}{6} = \frac{0}{6}= 0$