Question

-2/5-(-3/5) -3/7-(-3/5) -3/7-(+4/7​

Answer 1

$- \frac{2}{5} - ( - \frac{3}{5} ) = - \frac{2}{5} + \frac{3}{5} = \frac{1}{5} \\ - \frac{3}{7} - ( + \frac{ 4}{7} ) = - \frac{3}{7} - \frac{4}{7} = - \frac{7}{7} = - 1 \\ - \frac{1}{9} - ( + \frac{2}{9} ) = - \frac{1}{9} - \frac{2}{9} = - \frac{3}{9} = - \frac{1}{3}$