Question

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

Answer 1

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:(

Answer 2

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.

Answer 3

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