Kim's teacher has marked this problem as one to recheck, but kim cannot determine what she has done incorrectly. identify kim's error and write a correct solution.

six less than 2 times a number is 50. what is the number?

2x – 6 = 50 (line 1)

2x – 6 – 6 = 50 – 6 (line 2)

2x = 44 (line 3)

2x ÷ 2 = 44 ÷ 2 (line 4)

x = 22 (line 5)