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OpenStudy (anonymous):

How do I find the LCD of two rational expressions?

jimthompson5910 (jim_thompson5910):

Which 2 rational expressions?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

When adding or subtracting rational expressions, you need have common denominators just like any other fraction. If u don't have common denominators , then you'll need to find the least common denominator (LCD) and use it to get those denominators to be the same.

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