Question

{[(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

{23×2-12÷6}×2+12

44×2+12

=100

Answer 2

{[(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+6.3].2-12÷6}2+12

{[5+18].2-12÷6}2+12

{23.2-12÷6}2+12

{46-2}2+12

44.2+12

88+12=100