Question

quanto é 1/3 - 1/4 x 1/5 ??

Answer 1

$- \frac{1}{3} - (\frac{1}{4})*(\frac{1}{5})$
$- \frac{1}{3} - \frac{1}{4*5}$
$- \frac{1}{3} - \frac{1}{20}$
$- \frac{20}{60} - \frac{3}{60}$
$\frac{-23}{60}$