Changing a score of a different denominator into a score of the same denominator is equal to the original score, which is called the total score.

For example: 2/3+4/5 = (2 * 5+4 * 3)/3 * 5 = 22/15.

3 Take 5 * 6 10 = 3 and 6,5 and 10, and 2 takes 2.