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Mathematics 20 Online
OpenStudy (anonymous):

Explain why it is necessary to have common denominators when adding or subtracting rational expressions?

OpenStudy (anonymous):

Thank you. is there anything else I could add to that cause I had already put that as my answer and he said I needed more:(

OpenStudy (anonymous):

okay thank you so much. My teacher is really getting on me today and I don't know why. he keeps saying my answers aren't good enough. :( I really appreciate your help.

OpenStudy (anonymous):

I didn't think of that before. Thank you!

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