Question

Add the following rational numbers-
$\frac{3}{4},\frac{-2}{5}$

Answer 1

$\frac{3}{4},\frac{-2}{5}$

$\frac{3}{4}+\left(\frac{-2}{5}\right)$

$=\frac{3\times 5+(-2)4}{4\times 5}$

$=\frac{15-8}{20}$

$=\frac{7}{20}$