Question

quanto dar? {(1-9):{(+16)-(+12)}

Answer 1

{( 1 - 9) : {(16) - (12)} = 
{-8 : 16 - 12} =
-0,5 - 12 =
-12,5 

Answer 2

{(-8):{16 -12}
{(-8):{4}
{-8:4}
-2