(2x + 8) : 16 + 4 = 20
2x + 8 = ( 20 - 4 ) x 16
2x + 8 = 16 x 16
2x + 8 = 256
2x = 256 - 8
2x = 248
x = 248 : 2
x = 124
ta có : (2x + 8 ) : 16 + 4 = 20
(2x + 8 ) : 16 = 20 - 4 = 16
2x + 8 = 16 * 16 = 256
2x = 256 - 8 = 248
x = 248 : 2 = 124
vậy x = 124
k cho mình nha