Question

genteeee, me ajudem por favor!
$\frac{1}{7} - \frac{2}{5}$

Answer 1

$\frac{1}{7} - \frac{2}{5} = \frac{1*5 - 2* 7}{7*5} = \frac{5 -14}{35} = \frac{-9}{35}$