Answer: 16+n
Let’s first rewrite the equation
21+(n-5)
The first thing we need to do is distribute. The + acts as a +1. Let’s multiply n • 1 and -5•1.
21+(n-5)
21+n-5
Now we need to combine like terms. Like terms are numbers that share the same variable, or lack of. In this equation, these numbers are 21 and -5.
21+n-5
16+n
This is your answer! Hope this helps comment below for more questions :)