One method to convert 17/138 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 17 by the denominator 138:
17 (numerator) ÷ 138 (denominator) = 0.12
And there you go! We got 0.12 as the answer when you convert 17/138 to a decimal.