Question

Express the sum in the simplest form 3x / x + 5 + 7 / x + 5

Answer 1

I think you mean:

3x / (x + 5) + 7 / (x + 5)


`(3x)/(x + 5) + (7)/(x + 5)`

Since the denominators are the same, the denominators are the common denominator. We add the numerators and keep the common denominator.


`(3x)/(x + 5) + (7)/(x + 5) = (3x + 7)/(x + 5)`