To subtract fractions that have common denominators subtract their?

Answer:
Subtract their numerators, and put on top of the common denominator. Thus, for example, 5/3 - 3/3 = 2/3.

Works for addition, too (add the numerators).

First answer by Hilmarz. Last edit by Hilmarz. Contributor trust: 806 [recommend contributor recommended]. Question popularity: 1 [recommend question].