Or

Author:
Rachel Kaplan

This packet will go over:

-How to add and subtract rational expressions

-Finding the Least Common Denominator of a rational expression to help us do this

Step by step videos and explanations on how to add multiple kinds of rational expressions.

Tutorial

**Step 1:** Multiply the second expression (that is over one) by the denominator of the first expression. You must multiply both the top and bottom by the denominator of the first expression.

**Step 2:** Distribute as necessary.

**Step 3: **Combine like terms and add across. Keep the denominator (both of which are the same) constant.

A step by step example of how to add terms when the second expression is over one.

**Step 1:** Find your LCD, including all terms from the bottom of both expressions

**Step 2:** Manipulate both expressions to make the bottom equal the LCD

**Step 3:** Distribute as necessary

**Step 4: **Add by combining like terms

Step-by-step example of how to add two rational expressions, when the second term is not over one.

Another example, not unlike the one above.