The EQUATION Solve ME! xD.

I have an equation problem care to help me out its a pretty interesting equation.

1+11+111=1111

The rules to this equation are as follows

1. you can only move one 1 digit only using the numbers to left of the equal sign
2. The digits 1111 after the equal sign is correct answer to the equation.
3. you can not make it as an not equal to equation example: ≠
4. you can read it as any math problem example: 1+11+111 = 1111 (But this isn't the correct equation we're looking for.)

simply solve it for fun enjoy. xD.

Tip: It works better with using visual aids such as toothpicks, or match sticks. =).