Which expression is NOT equivalent to the other three?

Question

Responses

2x - 2.5 + 3x - 3
2x - 2.5 + 3x - 3 - no response given

5(x - 1.1)
5(x - 1.1) - no response given

5(x - 5.5)
5(x - 5.5) - no response given

5x - 5.5

Answer 1

The expression that is NOT equivalent to the other three is: 2x - 2.5 + 3x - 3