A fraction is written in terms of two parts: the number on top is called the numerator and the number on the bottom is called the denominator. We can use the division method to solve this question. To get a decimal, simply divide the numerator 51 by the denominator 2:
51 (numerator) ÷ 2 (denominator) = 25.5
As a result, you get 25.5 as your answer when you convert 3 45/2 (or 51/2) to a decimal.