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OpenStudy (anonymous):
Indicate which property is illustrated in Step 2. Step 1 3x + 1 + 2x + 7 = (3x + 1) + (2x + 7) Step 2 = 3x + (1 + 2x) + 7 Step 3 = 3x + (2x + 1) + 7 Step 4 = (3x + 2x) + (1 + 7) Step 5 = (3 + 2)x + (1 + 7) Step 6 = 5x + 8
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