helpppppp me plssss
uh
![helpppppp me plssss uh class=](https://us-static.z-dn.net/files/d65/1286511d067035e845b74c849683a799.jpg)
Step-by-step explanation:
(n+2)-(2n+1)
=n+2-2n-1
=n-2n+2-1
=-n+1