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OpenStudy (anonymous):
Explain why it is necessary to have common denominators when adding or subtracting rational expressions?
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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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