Quoc Tran Anh Le Coordinator
19/08/2018 at 11:19-
Huỳnh Anh Phương 20/08/2018 at 03:31YY + YY = XYZ
=> X = 1
If Y = 8 => 88 + 88 = 176 (impossible)
So Y = 9
We have : 99 + 99 = 198 (possible )
=> Z = 8
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