Answer
$-\dfrac{1}{10}$
Work Step by Step
Make the fractions similar using their LCD of 10 as denominator to obtain:
$=-(\frac{3\cdot2}{5\cdot2}) - (-\frac{1\cdot5}{2\cdot5})
\\=-\frac{6}{10} - (-\frac{5}{10}) $
RECALL: $a-b = a+(-b)$
Use the rule above to obtain:
$=-\dfrac{6}{10} + \dfrac{5}{10}
\\=\dfrac{-6+5}{10}
\\=\dfrac{-1}{10}$
