Answer
$x=-1$
Work Step by Step
$ 2x-1=6x+3\qquad$ ...add $-6x$ to each side.
$ 2x-1-6x=6x+3-6x\qquad$ ...add like terms.
$-4x-1=3\qquad$ ...add $1$ to each side.
$-4x-1+1=3+1\qquad$ ...add like terms.
$-4x=4\qquad$ ...divide each side with $-4$.
$x=-1$
