Simply just find the least common factor between the numerator and the denominator of the fraction, For example, 2/4, you know that between the two numbers, they both share the same common factor, 2, so divide 2 on the top and the bottom, and then your final answer would be 1/2. However, if there seems to be no common factor between the numerator and the denominator for a fraction, do not simplify it any more. You cannot have a decimal as a numerator or a denominator. For example, 3/5 has no common factor so you do not have to simplify it as it is already at its most simplest form.
