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Mathematics 13 Online
OpenStudy (anonymous):

Indicate which property is illustrated in Step 3. Step 1 12 - 3x - 12 + 4x = (12 - 3x) + (-12 + 4x) Step 2 = (12 - 3x) + (4x - 12) Step 3 = 12 + (-3x + 4x) - 12 Step 4 = 12 + (-3 + 4)x - 12 Step 5 = 12 + x - 12 Step 6 = x + 12 - 12 Step 7 = x + 0 Step 8 = x distributive commutative associative identity

OpenStudy (anonymous):

associative

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