You can split into two parts since there is a common denominator
In each part cross out the common factors (compare the numerator with the denomiator)
There are "3"'s and ONE "x" that are common between the numerator and denominator. So u are left with an extra "x" in the numerator..Do the same for the second part. The 3 is a muliple of the 12 so u divide 12 by 3 and there is a common "x", therefore,
The final answer is
x+4y
Hope that helped=)