Answer
$x=2$
Work Step by Step
We are given that $5x+12=2(2x+7)$. In order to solve for x, we can first use the distributive property to simplify the right side.
$5x+12=2\times(2x+7)=4x+14$
Subtract 12 from both sides.
$5x=4x+2$
Subtract 4x from both sides.
$x=2$