Adding and subtracting Rational Expressions - Adding or...

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Adding or Subtracting Rational Expressions with Common Denominators Step 1: Combine the numerators together. Step 2: Put the sum or difference found in step 1 over the common denominator. Step 3: Reduce to lowest terms as shown in Tutorial 8: Simplifying Rational Expressions. Why do we have to have a common denominator when we add or subtract rational expressions?????
Example 1 : Add . View a video of this example Since the two denominators are the same, we can go right into adding these two rational expressions. Step 1: Combine the numerators together AND Step 2: Put the sum or difference found in step 1 over the common denominator. *Common denominator of 5 x - 2 *Combine the numerators *Write over common denominator *Excluded values of the original den.
Step 3: Reduce to lowest terms. Note that neither the numerator nor the denominator will factor. The rational expression is as simplified as it gets. Also note that

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