find the sum of -7mn + 5, 12mn + 2,6mn - 8,-2mn - 3
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answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer answer
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1
Step-by-step explanation:
6 is the correct 52+7@8-7/8=9!
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