week4a

In your own words, answer the following by clicking the "reply" arrow:

• How is the Least Common Multiple used when adding or subtracting rational expressions?
• Simplify a rational expression from AMP lesson 4a that includes variables in the denominator.  Use this expression to illustrate how add or subtract two rational expressions with unlike-denominators. Explain each step of your example.
• Create an expression for your classmates to simplify involving adding or subtracting rational expressions.

Consider responding to your classmates by adding or subtracting their rational expressions and stating which values make it undefined.  You may want to review the examples of your classmates and comment on whether or not they are correct and why.