How so you add fractions?

Answer 1

If the fractions have the same denominators, just add the numerators: 2/7 + 3/7 = 5/7

If the fractions have different denominators, it is necessary to make them the same by finding the least common denominator, and converting the fractions.

Example 1/3 + 1/4

The LCD for 3 and 4 is 12.

1/3 = 4/12

1/4 = 3/12

Now that the denominators are the same, we can add the numerators.

4/12 + 3/12 = 7/12

1/3 + 1/4 = 7/12