Question

481abc : abc = 1481

 

Answer 1

481abc : abc = 1481

=> 481000 + abc = 1481 x abc

=> 481000 = 1480 x abc

=> abc = 481000 : 1480 = 325 

Answer 2

481abc : abc = 1481 

=> (481000+abc):abc=1481

=> 481000:abc+abc:abc=1481

=> 481000:abc+1=1481

=> 481000:abc=1481-1

=> 481000:abc=1480

=> abc=481000:1480

=> abc=325

           vậy abc=325

Answer 3

 481abc : abc = 1481 
=> 481.1000 + abc = 1481abc 
=> 481000 = 1480abc 
=> abc =481000/1480 = 325 
* thử lại: 481325/325=1481

Answer 4

 481abc : abc = 1481 
=> 481.1000 + abc = 1481abc 
=> 481000 = 1480abc 
=> abc =481000/1480 = 325 
* thử lại: 481325/325=1481

Answer 5

481abc:abc=1481

Đặt abc=A

481A:A=1481

(481*100+A):A=1481

481000+A=1481*A

481000:A=1481-1

481000:A=1480

 ⟹481000:1480=325

 ⟹abc=325