Question

{[(8×4+3)÷7+(3+15÷5]×2-(19-7)÷6}×2+20

Answer 1

{[(8  x 4 + 3) : 7 + (3 + 15 : 5) x 2 - (19 - 7) : 6} x 2 + 20

{[ (32 + 3) : 7 + (3 + 3) x 2 - 12 : 2 } x 2 + 20

{[35 : 7 + 6 x 2 - 6} x 2 + 20

{[5 + 12 - 6} x 2 + 20

{17 - 6} x 2 + 20

11 x 2 + 20

22 + 20 = 

= 42 

Answer 2

Olá!

{[(8×4+3)÷7+(3+15÷5)×3]×2-(19-7)÷6}×2+20

=> {[(32+3)÷7+(3+3)×3]×2-12÷6}×2+20

=> [(35÷7+6×3)×2-2]×2+20

=> [(5+18)×2-2]×2+20

=> (23×2-2)×2+20

=> (46-2)×2+20

=> 44×2+20

=> 88+20

=> 108

Espero ter ajudado!