Answer
$x=-9$
Work Step by Step
$8x-3x=-45$
First combine the like terms.
$(8-3)x=5x=-45$
Then divide both sides by 5.
$\frac{5x}{5}$=$\frac{-45}{5}$
$x=-9$
Check the answer.
8(-9)-3(-9)=-45
-72-(-27)=-45
-72+27=-45
-45=-45