#### Answer

D, B, F, A, E, C

#### Work Step by Step

It is important to first (D) factor the denominators in order to find (B) the least common denominator. In order to add fractions, the fractions must have the same denominator, so it is important to (F) change the fractions to an equivalent fraction with the least common denominator as the denominator. This allows you to (A) add/subtract the numerators. After this, you can (E) simplify the fractions and then (C) reduce.