Question

Cuanto da esto 4-16-{-30-[40+(16-20)]}

Answer 1

4-16-{-30-[40+(16-20)]}=54
-12-{-30-[40+(-4)]}
-12-{-30-[40-4]}
-12-{-30-[36]}
-12-{-30-36}
-12-{-66}
-12+66
54