Question

65+{16-2×[(6+8÷2)-(10-3)+(21÷3)+81]}

Answer 1

65 + {16 - 2 × [(6 + 8 ÷ 2) - (10 - 3) + (21 ÷ 3) + 81]}
65 + {16 - 2 × [(6 + 4) - 7 + 7 + 81]}
65 + {16 - 2 × [10 - 7 + 7 + 81]}
65 + {16 - 2 × 91}
65 + {16 - 182}
65 + {-166}
-101

Espero ter ajudado. Valeu!