Identify the property used in Step 1. Step 1 4 + 6x + 11 + 12x - 11 = 4 + 6x + 11 + (12x - 11) Step 2 = 4 + 6x + 11 + (-11 + 12x) Step 3 = 4 + 6x + [11 + (-11)] + 12x Step 4 = 4 + 6x + 0 + 12x Step 5 = 4 + 6x + 12x Step 6 = 4 + (6 + 12)x Step 7 = 4 + 18x Step 8 = 18x + 4
