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39 + 67

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39 + 67

106

First, add the tens digits, 30 + 60 = 90. Remember that for a moment. Now, add the one's digits, 9 + 7 = 16. Now, add the 16 to the 90 to get 106. ---- Alternately, subtract one from 67 and give it to 39, so we have 40 + 66 = 106.

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