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Mathematics 13 Online
OpenStudy (anonymous):

Using complete sentences, explain why it is necessary to have common denominators when adding or subtracting rational expressions.

OpenStudy (anonymous):

Suppose you have a pizza which divided into 8 equal parts!

OpenStudy (anonymous):

then you give your friends 2 parts, you can't add 1 + 1/2 You can't compare if they're not divided equally The concept just as comparison between orange and apple!

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