Final answer:
To find an equivalent expression for 1/7n + 9 - 4/7n, we combine like terms, resulting in -3/7n + 9.
Step-by-step explanation:
The student has asked which expression is equivalent to 1/7n + 9 - 4/7n.
To find an equivalent expression, we combine like terms.
The like terms here are 1/7n and -4/7n.
Step 1: Combine 1/7n and -4/7n.
1/7n - 4/7n
= (1-4)/7n
= -3/7n
Step 2: Make sure the constant term is included.
- So the equivalent expression is -3/7n + 9.
The process involves basic algebraic manipulation to simplify the given expression.