Similar fractions are ones that have the same denominator. To change dissimilar fractions to similar ones, you express them as equivalents with a common denominator.

Often, the easiest common denominator to find is the product of the dissimilar denominators. Usually, you will be interested in reducing the result, so the least common denominator may be the one of interest.

Examples 1/2 = 3/6

1/3 = 2/6

The dissimilar fractions 1/2 and 1/3 can be made to have the denominator 6 = 2*3 as shown.

1/6 = 2/12

1/4 = 3/12

Here, the least common denominator (12) is chosen. It is smaller than 24 = 6*4.

Often, the easiest common denominator to find is the product of the dissimilar denominators. Usually, you will be interested in reducing the result, so the least common denominator may be the one of interest.

Examples 1/2 = 3/6

1/3 = 2/6

The dissimilar fractions 1/2 and 1/3 can be made to have the denominator 6 = 2*3 as shown.

1/6 = 2/12

1/4 = 3/12

Here, the least common denominator (12) is chosen. It is smaller than 24 = 6*4.