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6-{-4+[3-(-8-5)+14]-7}

User Skyrim
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= 6 - {-4+[3-(-13) +14]-7}
= 6 - {-4+[3+13+14]-7}
= 6 - {-4+[30]-7}
=6- {19}
=-13
answer is minus thirteen
User Nvidot
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