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Mathematics 7 Online
OpenStudy (anonymous):

2. Indicate which property is illustrated in Step 2. Step 1 7x + 1 + 8x + 2 = (7x + 1) + (8x + 2) Step 2 = 7x + (1 + 8x) + 2 Step 3 = 7x + (8x + 1) + 2 Step 4 = (7x + 8x) + (1 + 2) Step 5 = (7 + 8)x + (1 + 2) Step 6 = 15x + 3 associative distributive commutative arithmetic fact

OpenStudy (anonymous):

Associative

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