Final answer:
To solve the equation, divide both sides by 15 to isolate x. Simplify to find that x = 30.
Step-by-step explanation:
To solve the equation, we need to isolate x. First, divide both sides of the equation by 15 to get rid of the coefficient: 0.2*450/15 = 15x/15. Simplify: 30 = x. Therefore, x = 30.