SOLUTION: I'm currently working on Lesson 5-6 Sums and Differences of Rational Expressions. It's relatively easy, I'm not having too much of a problem with it. Here's the problem: 17. a/b

Question 522372: I'm currently working on Lesson 5-6 Sums and Differences of Rational Expressions. It's relatively easy, I'm not having too much of a problem with it. Here's the problem:
17. a/bc + b/ac + c/ab
the answer is a^2 + b^2 + c^2 over abc.
i'm confused how they got that. I can almost unerstand. One of those tip of the tongue kind of things. Please help!
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
abc is the lowest common denominator (LCD)

when you convert each of the fractions to the LCD, you multiply the numerator by the missing factor
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