Question

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

Answer 1

{ [ ( 32 + 3) : 7 + (3 + 3) x 3 ] × 2 - 12 : 6} × 2 + 12

{ [ 35 : 7 + 6 × 3 ] x 2 - 2 } × 2 + 12

{ [ 5 + 18 ] × 2 - 2 } × 2 + 12

{ 23 x 2 - 2} × 2 + 12

{ 46 - 2 } × 2 + 12

44 × 2 + 12

88 + 12=100

Answer 2

{[(8×4+3)÷7+(3+15÷5)×3]×2-(19-7)÷6}×2+12
{[(35)÷7+(6)x3]x2-(12)÷6}x2+12
{[5+18]x2-2}x2+12
(23x2-2) x2+12
44x2+12
88+12
100

Espero ter ajudado.