72 : ( 4x - 3 ) = 23
72 : ( 4x - 3 ) = 8
4x - 3 = 72 : 8
4x - 3 = 9
4x = 9 + 3
4x = 12
x = 12 : 4
x = 3
72 : ( 4x - 3 ) = 23
72 : ( 4x - 3 ) = 8
4x - 3 = 72 : 8
4x - 3 = 9
4x = 9 + 3
4x = 12
x = 12 : 4
x = 3
72 : (4x - 3)=8
suy ra 72: 8=9=4x-3
suy ra : 4x-3=9
9+3=4x=12
x= 12:4
x=3
( Câu này dễ mà bạn )
72 : ( 4x - 3 ) = 23
72 : ( 4x - 3 ) = 8
4x - 3 = 72 : 8
4x - 3 = 9
4x = 9 + 3
4x = 12
x = 12 : 4
Vậy x = 3
72 : ( 4x - 3 ) = 23
72 : ( 4x - 3 ) = 8
4x - 3 = 72 : 8
4x - 3 = 9
4 . x = 9 + 3
4 . x = 12
x = 12 : 4
x = 3
72 : (4x - 3) = 23
72 : (4x - 3) = 8
4x - 3 = 72 : 8
4x - 3 = 9
4x = 9+3
4x = 12
x = 12 : 4
x = 3
tích cho mik nhé
Ta có 72:(4x-3)=2^3
4x-3=72:8
4x-3=9
4x=12
x=3
Vậy x=3
72: (4x - 3)= 8
4x- 3=72 : 8
4x - 3 =9
4x = 9+3
4x =12
x = 12:4
x = 3
Vậy x=3