How do I solve x-2=2x-4

Are you really in high school?

x - 2 = 2x - 4

Subtract 'x' from each side: - 2 = x - 4

Add 4 to each side: 2 = x

To solve x-2=2x-4 you need to isolate the variables or x to one side.

x-2=2x-4

-x - x

-2=x-4

+4 + 4

2=x

The steps I used were: 1: isolate variable (don't forget what you do to one side of the equation you must do for the other. 2: Add four to each side to get x by itself, and your Done!