You must use the same SINGLE-digit 3 times in a simple addition that has 12 as its total. Do not add four digits together. Do not use equations with parentheses. Avoid negative numbers. Do not use 4, 3, 2, 6, or 9. Which digit can you use then?
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It is not possible
How can it be ?
Sorry but I can't answer this question now but when I will I will tell ok .
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