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求助一道GWD的题
AB+BA=AAC
In the correctly worked addition problem shown, where the sum of the two-digit positive integers AB and BA is the three-digit integer AAC, and A, B, and C are different digits, what is the units digit of the integer AAC?
答案：9,6,3,2,0
这道题搞不懂思路请您帮我讲讲，非常感谢 |
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