Question

abc1 - 1abc = 7560. tìm abc

Answer 1

10abc + 1 - 1000 - abc = 7560

9abc = 7560 + 1000 - 1

abc = 8559 : 9

abc = 951

Answer 2

abc1 - 1abc=7560

1abc+7560=abc1

1000+abc+7569=abc*10+1

8569=abc*9+1

abc*9=8569-1

abc*9=8569

abc=8569/9

abc=952

k cho mình nhé