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 139 by the denominator 12:
139 (numerator) ÷ 12 (denominator) = 11.58
As a result, you get 11.58 as your answer when you convert 7 55/12 (or 139/12) to a decimal.