Answer:
3n + 5
Step-by-step explanation:
3n + 7 - 2
3n is a variable.
7 and 2 are numbers.
Variables can be added with variables.
If variables are added with numbers, it remains constant ( and vice - versa ),
That is.
3n + 7 = 3n + 7
When the value of n is given, then the result of " 3n + 7 " will be a number.
In this question, the value of n is not given.
Numbers can be added or subtracted with numbers. The result will be a number.
7 - 2 = 5
So,
the answer is 3n + 5