Answer
$-\dfrac{1}{4}$
Work Step by Step
First, make the fractions similar using their LCD, which is 4, to obtain:
$=\dfrac{1}{4} - \dfrac{2}{4}$
RECALL:
$a-b = a+(-b)$
Thus,
$\frac{1}{4} - \frac{2}{4}
\\= \frac{1}{4} + \frac{-2}{4}
\\=-(\frac{2}{4}-\frac{1}{4})
\\=-\frac{1}{4}$