Which of the following is an example of an equation with no solution?

3x+4=4x+3
3x+4=3x+3
4x+3=3x+3
3x+4=3x+4

The equation "3x+4=3x+4" is an example of an equation with no solution.

An example of an equation with no solution is 3x+4=3x+3.