Answer:
Step-by-step explanation:
[tex]-1.5x+6=15\qquad\text{suntract 6 from both sides}\\\\-1.5x+6-6=15-6\\\\-1.5x=9\qquad\text{divide both sides by (-1.5)}\\\\\dfrac{-1.5x}{-1.5}=\dfrac{9}{-1.5}\\\\x=-6[/tex]