Question

21-{2.[12+6:(4-2.3)]}

Answer 1

= 21 - {2.[12 + 6 : (4 - 2.3)]}
= 21 - {2.[12 + 6: (4 - 6)]}
= 21 - {2.[12 + 6: (-2)]}
= 21 - {2.[12 - 3]}
= 21 - {2.9}
= 21 - 18
= 3

Answer 2

21-{2.[12+6:(4-2.3)]}21-{2.[12+6:(4 - 6)]}
21-{2.[12+6:-2]}
21-{2.[12-3]}
21-{2.9}
21-{18}
21 - 18
3

Resposta: 3