Prealgebra (7th Edition)

$x=-1.5$
$-x+0.6-2x=-4x-0.9\rightarrow$ add 4x and subtract 0.6 to both sides $-x+0.6-2x+4x-0.6=-4x-0.9+4x-0.6\rightarrow$ combine like terms $x=-1.5$