Answer
$\frac{3}{10}$
Work Step by Step
$\frac{2}{5}$ - $\frac{1}{10}$
Step 1: Change the subtraction sign to addition and replace $\frac{1}{10}$ to its opposite
$\frac{2}{5}$ + (-$\frac{1}{10}$)
Step 2: Add two fractions
$\frac{4}{10}$ + (-$\frac{1}{10}$) = $\frac{3}{10}$
