Final answer:
To simplify 81.56 + n, combine the numbers and keep the variable n unchanged.
Step-by-step explanation:
To simplify the expression 81.56 + n, we can combine the two numbers by adding them together. The result is 81.56 + n. Since n is a variable representing any number, we cannot simplify it any further. Therefore, the simplified expression is 81.56 + n.
Learn more about simplifying mathematical expressions