We are not ready to invert and multiply yet, because we are adding or subtracting fractions on the top and bottom. So we do the addition and subtraction on the top and bottom. The common denominator is   x   on both the top and bottom.


Combine like terms

We are now at the point where we can invert and multiply. But first, let's factor.

We could cancel at this point if we cancel the factors that would cancel if we inverted and multiplied.

In any event, the answer is

x + 3

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