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Please help me on number 2
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Please help me on number 2

Please help me on number 2-example-1
User Chandrahasan
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The answer is B.  Because B is a negative number, -B is a positive number.  If adding them together gets 0, then A+B=0.  Because of this, you can subtract B from both sides, leaving the answer A=-B
User Neoascetic
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