481abc : abc = 1481
(481000 + abc) : abc = 1481
481000 : abc + abc : abc = 1481
481000 : abc + 1 = 1481
481000 : abc = 1480
abc = 325
481abc : abc = 1481
481abc = 1481 . abc
481 000 + abc = 1481 . abc
481 000 = abc . 1481 - abc
481 000 = abc . 1480
=> abc = 481 000 : 1480
=> abc = 325
481abc : abc = 1481
=> 481abc = 1481 . abc
=> 481000 + abc = abc . 1481
=> 481000 = 1480 . abc
=> 325 = abc
=> abc = 325
Ta có: 481abc : abc = 1481
=> 481abc = 1481 . abc
=> 481000 + abc = 1481 . abc
=> 481000 = abc . 1481 - abc
=> 481000 = abc . 1480
=> abc = 481000 : 1480
=> abc = 325
481abc : abc = 1481
( 481000 + abc ) : abc = 1481
481000 : abc + abc : abc = 1481
481000 : abc + 1 = 1481
481000 : abc = 1480
abc = 325
481abc : abc =1481
481abc =1481 .abc
481000 + abc =1481 .abc
481000=abc .1480
abc = 481000 :1480
abc = 325
Vay abc =325
Ta có :
481abc : abc = 1481
=> (481000 + abc) : abc = 1481
=> 481000 : abc + 1 = 1481
=> abc = 481000: 1480
=> abc = 325