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Mathematics 25 Online
OpenStudy (anonymous):

Indicate which property is illustrated in Step 5. Step 1 12x + 4 + 5x + 5 = (12x + 4) + (5x + 5) Step 2 = 12x + (4 + 5x) + 5 Step 3 = 12x + (5x + 4) + 5 Step 4 = (12x + 5x) + (4 + 5) Step 5 = (12 + 5)x + (4 + 5) Step 6 = 17x + 9 A. associative B. distributive C. arithmetic fact D. commutative

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