Question

calcule o valor da expressão

{ [ (8×4+3)÷7+(3+15÷5)×3]×2-(19-7)-6}×2+12

Answer 1

{[(35)÷7+(6)×3]×2-(12)-6}×2+12
{[5+6×3]×2-12-6}×2+12
{23×2-12-6}×2+12
{46-18}×2+12
28×2+12
56+12
= 68