Question

(28-12:9+(32:2:6))-18

Answer 1

(28-12:9+(32:2:6))-18

1-Devemo calcular o que está entre parênteses!
(28-12:9+(32:2:6))-18=
(28-1,3333+(2,6666)-18
2-Subtrair 1,3333 de 28!
(26,6666+2,6666)-18
3-Somar 26,6666 e 2,6666:
29,3332-18
4-Subtrair 18 de 29,3332:
11,3332