The expression given is,
[tex]\left(+14\right)\:-\:\left(-4\right)[/tex]Apply rule:
[tex]\begin{gathered} \left(+14\right)\:-\:\left(-4\right) \\ 14-\left(-4\right)=14+4 \end{gathered}[/tex]Add the numbers:
[tex]14+4=18[/tex]Hence, the answer is 18.
