Answer
$$\frac{x^2}{3x}+\frac{6x}{3x} + \frac{12}{3x}$$
Work Step by Step
We can split each component in the numerator up by making separate fractions, all with the same denominator. Thus, we find:
$$\frac{x^2}{3x}+\frac{6x}{3x} + \frac{12}{3x}$$
