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Mathematics 20 Online
OpenStudy (anonymous):

1. Indicate which property is illustrated in Step 2. Step 1 11 + 12x - 11 - 5x + 4 = 11 + (12x - 11) - 5x + 4 Step 2 = 11 + (-11 + 12x) - 5x + 4 Step 3 = [11 + (-11)] + (12x - 5x) + 4 Step 4 = 0 + (12x - 5x) + 4 Step 5 = (12x - 5x) + 4 Step 6 = (12 - 5)x + 4 Step 7 = 7x + 4 additive identity distributive additive inverse commutative

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