Learn how to solve problems involving missing fractions by finding a common denominator. [5:39]

Sal subtracts 3/4-5/8 using a fraction model for help.

Sal subtracts 17 4/9 - 12 2/3.

Sal subtracts 3 2/5 from 7 6/9 by rewriting each mixed number to have a common denominator.

Sal solves a word problem by subtracting mixed numbers with unlike denominators.

This video tutorial shows how to subtract mixed numbers with different denominators. [2:17]

This video tutorial shows how to subtract mixed numbers from a whole number and a whole number from a mixed number. [2:26]