Perform the Indicated Operation and Express Your Answer in Simplest $$\frac { n } { n - 3 } + \frac { n + 7 } { n + 7 } + \frac { 16 n + 21 } { n ^ { 2 } + 4 n - 21 }$$

question 14

Short Answer

Perform the indicated operation and express your answer in simplest form. $$\frac { n } { n - 3 } + \frac { n + 7 } { n + 7 } + \frac { 16 n + 21 } { n ^ { 2 } + 4 n - 21 }$$ Please enter your answer as one fraction with the denominator factored completely.

---

Definitions:

Epithelial Tissue

A type of bodily tissue that lines the outer surfaces of organs and blood vessels, as well as the interior of hollow structures.

Endoscopy

A medical procedure that allows a doctor to inspect and observe the inside of the body without making large incisions, using an instrument called an endoscope.

Nervous

Pertaining to the nervous system, which includes the brain, spinal cord, and peripheral nerves, or feeling anxious and apprehensive.

Steroid

A type of organic molecule with a characteristic molecular structure containing four rings, used in medicine to reduce inflammation and as hormones in the body.