Which of the following equations has a solution different from the rest?

1. 1/2x-3=1/2
2. -0.35x-0.52=1.93
3. 3/4x+5=-1/4
4. -1/7x-3/4=1/4

The equation that has a solution different from the rest is 2. -0.35x-0.52=1.93.