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Mathematics 9 Online
OpenStudy (anonymous):

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) Step 1: 12 + (–3)·(–2x) + (–3)·(4) Step 2: 12 + 6x + (–12) Step 3: 12 + (–12) + 6x Step 4: 0 + 6x Step 5: 6x What property of real numbers was used to transition from Step 3 to Step 4? A.identity property of addition B.inverse property of addition C.associative property of addition D.commutative property of addition

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