Gọi a là số bé, b là số lớn, ta có:
a+b=102 : a0 + b = a x10 + b = 417
=> 10a + b - ( a+b) =315
+> 10a + b -a -b =315=> (10a -a) + ( b+b)= 315
=> 9a=315=> a=35=> b=102-35=67
Đ/s:...
Các bạn nhớ tick mình nhé
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tong cua 2 so tu nhien la 102.neu them chu so 0 vao ben phai so be roi cong voi so lon ta duoc tong moi la 417
vay so lon la...........
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