Benjamin solved the following equation: 4x − 2x + 8 = 6(x + 4) step work justification 1 4x − 2x + 8 = 6x + 24 combine like terms 2 2x + 8 = 6x + 24 combine like terms 3 −4x + 8 = 24 subtraction property of equality 4 −4x = 16 subtraction property of equality 5 x = −4 division property of equality which step has an incorrect justification?