Question

5/7 + 5/9 + 2/7 + 4/9

Answer 1

$\frac{5}{7} + \frac{5}{9} + \frac{2}{7} + \frac{4}{9} = ( \frac{5}{7} + \frac{2}{7} ) + ( \frac{5}{9} + \frac{4}{9} ) = \frac{7}{7} + \frac{9}{9} = 1 + 1 = 2$