Begin by distributing $2$ to the terms inside the parentheses.

$x = 4.5$

Move all variables to one side of the equation and all constants to the other side of the equation.

Remember to distribute the negative inside the parentheses.
$3x + 4.4 = −6.6 − x$

Add $x$ to both sides and subtract $4.4$ from both sides to isolate $x$.
$4x = −11$

$x = −2.75$