#### Answer

$x=-7/5$

#### Work Step by Step

The distributive property allows us to distribute anything multiplied by something inside of the parenthesis to whatever is inside of the parenthesis. Thus, we distribute the -7 to everything inside of the first set of parenthesis and the -6 to everything inside of the second set of parenthesis, giving us the equation:
$3-7x+7=9-12x-6$
We now simplify:
$-7x+10=-12x+3 \\\\5x+10=3 \\\\ 5x=-7 \\\\ x=-7/5$