Question

-4+5-{3+4-5-[7+(6+4)-7-6]+4}
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Answer 1

Respuesta: -1

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

+1-{2-[7+(10)-13]+4}

+1-{2-[7+10-13]+4}

+1-{2-[4]+4}

+1-{2-4+4}

+1-{2}

+1-2

-1  <=rpta