abc2 + 423 = 2abc
abc x 10 + 2 + 423 = 2000 + abc
abc x 10 - abc x 1 = 2000 - 423 - 2
abc x 9 = 1575
abc = 1575 : 9
abc = 175
Giải hộ mình nha nhớ giải chi tiết đó
abc2+423=2abc
abcx10+2+423=2000+abc
abcx10-abc=2000-425
abcx9=1575
abc=1575/9=175
abc2+423=2abc
abc x 10+2+423=2000+abc
abc x 10-abc=2000-2-423
abc x (10-1)=1575
abc x 9=1575
abc=1575:9
abc=175
Vậy số cần tìm là:175
=> abc x 10 + 2 + 423 = 2000 + abc
=> abc x 10 + 425 = 2000 + abc
=> 10abc - abc = 2000 - 425
=> 9abc = 1575
=> abc = 1575 : 9
=> abc = 175
Vậy abc = 175
ta có: abc2+ 423= 2abc
10.abc+2+423=2000+abc
10abc -abc=2000-425
9abc=1575
vậy: abc=1575:9
abc=175
abc2 + 423 = 2abc
10abc + 2 + 423 = 2000 + abc
10abc + 425 = 2000 + abc
9abc = 1575
abc = 1575 : 9
abc = 175