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Mathematics 11 Online
OpenStudy (anonymous):

GIVING MEDALS AND FANNING SO HELP Indicate which property is illustrated in Step 3. Step 1 2x + 2 + 7x + 10 = (2x + 2) + (7x + 10) Step 2 = 2x + (2 + 7x) + 10 Step 3 = 2x + (7x + 2) + 10 Step 4 = (2x + 7x) + (2 + 10) Step 5 = (2 + 7)x + (2 + 10) Step 6 = 9x + 12 distributive arithmetic fact associative commutative

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