What is a multi step equation that equals 11?

Start with the equation:x = 11

Then, to make the equation more complicated ("multi-step"), you can do different manipulations, always on both sides of the equation; for example:

* Add some number to both sides

* Multiply both sides by the same number

* Square both sides, or apply some other function to both sides (note: this may introduce additional solutions, depending on the properties of the function applied)