=> 41 - ( 2x - 5) = 720 : 160 = 6
=> 2x - 5 = 41 - 6
=> 2x - 5 = 35
=>2x = 40
=> x = 20
Vậy x = 20
Ta co:
720:[41-(2x-5)]=120
41-(2x-5) = 720 : 120
41 - (2x-5) = 6
2x - 5 = 41 -6
2x -5 = 35
2x = 35 +5
2x = 40
x = 40 :2
x =20
Vậy x bằng 20
720 : [ 41 - ( 2x - 5 ) ] = 120
=> 41 - ( 2x - 5 ) = 720 : 120 = 6
=> 2x - 5 = 41 - 6 = 35
=> 2x = 35 + 5 = 40
=> x = 40 : 2 = 20
đúng nha !!!