Question

1)Tìm abc=? biết

ab2+423=2abc

Answer 1

     ab = 324

   2abc= 975

Vậy ta có : 324 + 975 = 1299

Answer 2

ab = 324

2abc= 975

vaayk

324+975= tu tinh

Answer 3

abc2 + 423 = 2abc

abc x 10 + 2 + 423 = 2000 + abc

abc x 10 - abc = 2000 - ( 423 + 2 )

abc x 10 - abc = 2000 - 425

abc x 9 = 1575

abc = 1575 : 9 = 175

Answer 4

Ab=324

2abc=975

Ta có :324+975=1299