Final answer:
To simplify the sum (x+9)/(x-4)+(x+8)/(x-4), combine the fractions by finding a common denominator. The simplified sum is 2x + 17.
Step-by-step explanation:
To simplify the sum (x+9)/(x-4)+(x+8)/(x-4), we can combine the two fractions by finding a common denominator. In this case, the denominators are the same, so we can add the numerators together:
(x+9) + (x+8) = 2x + 17
The simplified sum is 2x + 17. There are no restrictions on the variable x in this case.