Final answer:
The expression (12n - 6 + p + 6n) simplifies to (18n + p) by combining like terms, making the correct answer (b) 18n + p.
Step-by-step explanation:
The student has presented an algebraic expression that needs to be simplified: (12n - 6 + p + 6n). To simplify the expression, we combine like terms, which are terms that have the same variable raised to the same power.
First, we combine the 'n' terms:
Next, we combine the constant terms:
- -6 + 6 = 0 (which cancels out).
Since the 'p' term does not have a like term to combine with, it remains as is. So the simplified expression is:
Therefore, the correct answer is (b) 18n + p.