The answer is [tex]-\frac{1}{2}[/tex]
First you must change the fractions so that they have like denominators.
[tex]\frac{10}{12} -\frac{16}{12}[/tex]
Then you subtract the fractions.
[tex]-\frac{6}{12}[/tex]
Finally, you need to simplify the answer.
[tex]-\frac{1}{2}[/tex]