Question

{[(8.4+3)÷7+(3+15÷5).3].2-(19-7)÷6}.2+12

Answer 1

{[(8.4+3)÷7+(3+15÷5).3].2-(19-7)÷6}.2+12
{[(32 + 3) :7 + (3 + 3) . 3].2 - (12):6} . 2 + 12
{[35:7 + 9.3].2 - 2}.2 + 12
{[5 + 27].2 - 2}.2 + 12
{32.2 - 2} + 12
{64 - 2} + 12
62 + 12
  74