-{7+[5-(-7-2)]}+5-{-[9-(14-5)+3]-5}-8
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-{7+[5-(-9)]}+5-{-[9-9+3]-5}-8
=- {7+5+9}+5 -{ -3-5}-8
= -21+5+8-8
= -16
=- {7+5+9}+5 -{ -3-5}-8
= -21+5+8-8
= -16
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