![-8.8s-20](https://img.qammunity.org/2023/formulas/mathematics/college/59lxystwb7okny05t4gh4wdryubjl4vtl6.png)
This is the expression for a square's perimeter.
We want to know the expression for the square's side.
We know all 4 sides of the square is equal.
Let one side length be x, so the perimeter is basically 4 times of that. THus, we can write:
4x = -8.8s - 20
If we divide by 4 all over, we get x, the side length. Let's do this:
![(-8.8s-20)/(4)=-(8.8s)/(4)-(20)/(4)=-2.2s-5](https://img.qammunity.org/2023/formulas/mathematics/college/29uedj5xbkrmddrkbn759kcdtqgjmdxziz.png)
Side length is:
-2.2s - 5