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Question by  jenniebelle0101 (31)

How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from doing operations with fractions?

 
+6

Answer by  blimpie181 (23)

When working with fractions using addition and subtraction, it is always necessary to find a common denominator in order to find the correct answer. With rational expressions, such a step is not needed.

 
+4

Answer by  ryangrabigel (16)

Addition and subtraction are the same if the fractions have a common denominator. Multiplication is the same, while division is simply multiplying by the inverse of the second fraction.

 
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