How to solve this inequality 4x-12 greater than or equal to 20? ?

4x-12 greater than or equal to 20
You add both sides to het 4x by itself
4x greater than or equal to 32
You divide both sides by 4 to get x by itself
Your answer is x is greater than or equal to 8

4x-12 > or = 20
Add 12 to both sides. 
4x > or = 32
Divide 4 on both sides. 
x > or = 8