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Mathematics 17 Online
OpenStudy (anonymous):

9. Indicate which property is illustrated in Step 4. Step 1 9x + 4 + 8x + 12 = (9x + 4) + (8x + 12) Step 2 = 9x + (4 + 8x) + 12 Step 3 = 9x + (8x + 4) + 12 Step 4 = (9x + 8x) + (4 + 12) Step 5 = (9 + 8)x + (4 + 12) Step 6 = 17x + 16 associative arithmetic fact commutative distributive

OpenStudy (anonymous):

help please!

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