This clip explains the role of multiples in finding common denominators. It also clarifies the difference between multiples and denominators, noting that "numbers have multiplesÂ…fractions have denominators".
This clip explains the use of prime factorization in finding the least common multiple.
This clip explains that using the least common multiple (which is another way of saying the smallest common multiple) as the common denominator is the simplest way to add fractions.
This clip introduces the concept of adding fractions with different denominators. It explains that this is done by re-naming the fractions so that they have the same denominator, which is accomplished by finding the comm..
This clip explains a very simple rule: To add two fractions with different denominators, simply multiply through the first fraction by the denominator of the second, and multiply through the second fraction by the denomi..
This clip reviews the topic of adding fractions with different denominators. It explores three ways this can be done, including writing the multiples of each denominator until a common multiple is found; multiplying the ..
Demonstration of how to add like terms in an algebraic expression and application of this skill to a practical problem.
Demonstration of adding terms in a complex algebraic expression and a practical problem demonstrating application of this skill in the real world.
An example of adding rational expressions that have binomials and trinomials in the denominator is illustrated.
Rational expressions with different denominators are added and the procedure explained.