Question

How do I find the common denominator here?

Answer 1

I am trying to simplify this expression: (325/x) - (325/x +15)
I know that I have to multiply the denominator from the first fraction by something so that it will be the same as the denominator in the second fraction, but how do I do that?

Answer 2

do you get it?

Answer 3

But if I multiply x * x + 15, wouldn't that make x^2 + 15x?

Answer 4

yes

Answer 5

multiply the numerators first and then subtract the two and tell me what you get