Solve for x

Once, in a "math appreciation" course, part of a test I gave had some one-variable linear equations to solve. Most of this course was "algebra-free" since many of the students had very weak backgrounds in math. However, solving one-variable linear equations was one of the topics covered and this test was given after that topic had been covered.

Question -- Solve for x: 3x - 2 = x.

Student asks during test -- "I can solve for x on the left side, but what do I do with the x on the right side?"