Answer:
Step-by-step explanation:
[tex]15c-9c+2c-6c=8\qquad\text{combine like terms}\\\\(15-9+2-6)c=8\\\\2c=8\qquad\text{divide both sides by 2}\\\\\dfrac{2c}{2}=\dfrac{8}{2}\\\\\huge\boxed{c=4}[/tex]
c=4.......................
