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Mathematics 11 Online
OpenStudy (anonymous):

. Indicate which property is illustrated in Step 3. Step 1 7x + 1 + 6x + 6 = (7x + 1) + (6x + 6) Step 2 = 7x + (1 + 6x) + 6 Step 3 = 7x + (6x + 1) + 6 Step 4 = (7x + 6x) + (1 + 6) Step 5 = (7 + 6)x + (1 + 6) Step 6 = 13x + 7 arithmetic fact commutative distributive associative

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