Isabella solved the following equation: 4x – 2x + 8 = 6(x + 4) step work justification 1 4x – 2x + 8 = 6x + 24 distributive property 2 2x + 8 = 6x + 24 combine like terms 3 −4x + 8 = 24 addition property of equality 4 −4x = 16 subtraction property of equality 5 x = −4 division property of equality which step has an incorrect justification? (make sure to type only the number of the step into the blank: 1, 2, 3, 4 or 5)