Question 348156
You did everything right and your answer is correct.
You can always check your answer by substituting n = 4.5 into the given equation and see if the two sides are equal.
10n = 36+2n Substitute n = 4.5
10(4.5) = 36+2(4.5) Evaluate.
45 = 36+9
45 = 45 So your solution works!