Goi so be la x.Vay thuong la 6x so lon la 12x.Vay thuong cua 2 so la 12x:x=12.
Vay x=12:6=2﴾vi thuong gap 6 lan so be﴿
=>So lon la 12x2=24﴾vi thuong bang mot nua so lon﴿
Dap so:Thuong=12,so lon=24,so be=2
b.Gọi ba số là a,b,c. Ta có a+b+c=122, a=3b+1, b=3c+1 ﴾1﴿
Suy ra a=3﴾3c+1﴿ + 1 = 9c+4 ﴾2﴿
Tu ﴾1﴿,﴾2﴿ => 9c+4 + 3c+1 +c = 122
=> 13c + 5 = 122
=> c = 9
=> b =3c+1=28 => a = 3b+1=85
Vậy ba số đó lần lượt là 85, 28, 9
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