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68+[26-(81:9+4)]-[25-(64:8+3)]=

Răspuns :

68+[26-(81:9+4)]-[25-(64:8+3)]
=68+[26-(9+4)]-[25-(8+3)]
=68+[26-13-[25-11]
=68+13-14
=55-14
=41
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