Resposta :
[6 × (12 - 10) - 4] + 3 × 2 - 5 =
[6 × 2 - 4] + 3 × 2 - 5 =
[12 - 4] + 3 × 2 - 5 =
8 + 3 × 2 - 5 =
8 + 6 - 5 =
14 - 5 = 9
[6 × (12 - 10) - 4] + 3 × 2 - 5 =
[6 × 2 - 4] + 3 × 2 - 5 =
[12 - 4] + 3 × 2 - 5 =
8 + 3 × 2 - 5 =
8 + 6 - 5 =
14 - 5 = 9