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The sum of (a + b) + c is equal to the sum of a + (b + c) as explained by the blank
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The sum of (a + b) + c is equal to the sum of a + (b + c) as explained by the blank

User Akr
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5 votes

Answers: #1 is (-12/5).

#3 is (-5/2). And #5 is 5/6

User ULYsseus
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