One method to convert 109/21 to a decimal is by using the division method. Before we move ahead to the method, here is a quick recap on fractions: A fraction is a number representation that is broken down into two parts - the number on top is called the numerator, and the number on the bottom is called the denominator. To get a decimal using the division method, simply divide the numerator 109 by the denominator 21:
109 (numerator) ÷ 21 (denominator) = 5.19
And there you go! We got 5.19 as the answer when you convert 3 46/21 (or 109/21) to a decimal.