Answer
$x=\frac{27}{5}$
Work Step by Step
$-(x+3)=14(x-6)$
$-x-3=14x-84$
$-x-14x=-84+3$
$-15x=-81$
$x=\frac{-81}{-15}=\frac{27}{5}$
Check the answer:
$-(\frac{27}{5}+3)=14(\frac{27}{5}-6)$
$-\frac{42}{5}=14(-\frac{3}{5})$
$-\frac{42}{5}=-\frac{42}{5}$