Answer :

3x + 9 = 3
 x + 3
The answer to the problem is equal to 3.

Answer:

simplified = 3

restrictions/excluded: -3

Step-by-step explanation:

3x + 9 / x + 3

Break it down:

3x / x = 3

9 / 3 = 3

The simplified version of this expression is 3.

If x = -3, the denominator will be 0 and it will be undefined.