Question

9-{-6÷6+[12-(-3+12)×(6×9-15)]}

Answer 1

9-{-6÷6+[12-(-3+12)×(6×9-15)]}
9-{-6÷6+[12-9×39]}
9-{-6÷6+[351-12]}
9-{-6÷6+339}
9-{-1+339}
9-338
-329

Espero ter ajudado