I'm about to do it. If we want x minus 5 to look a lot more like this, when x is not equal to 5, and all of this whole interval, x is not equal to 5, f of x is equal to 2x. Our limit, our proposed limit, is equal to 10. If we could somehow get this to be 2x minus 10, then we're in good shape. The easiest way to do that is to multiply both sides of this inequality by 2. You multiply both sides of this inequality by 2. Two times the absolute value of something, that's the same thing as the absolute value of 2 times that thing.