Ta có: 260abc : abc = 626
=> 260000 + abc = 626.abc
=> 625.abc = 260000
=> abc = 416
260abc : abc = 626
=> 260abc = 626 x abc
=> 260000 + abc = 626 x abc
=> 626 x abc - abc = 260000
=> 625 x abc = 260000
=> abc = 260000 : 625
=> abc = 416
Vậy abc = 416
260abc : abc = 626
260abc = 626 x abc
260000 + abc = 626 x abc
260000 = abc x 626 - abc
260000 = abc x 625
=> abc = 416
Đáp số: 416
260abc : abc = 626
=> 260abc = 626 x abc
=> 260000 + abc = 626 x abc
=> 626 x abc - abc = 260000
=> 625 x abc = 260000
=> abc = 260000 : 625
=> abc = 416
Vậy abc = 416
