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27 votes
27 votes
2+2 (free easy answer)

User Vitali Tchalov
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2 Answers

22 votes
22 votes
2+2=4, the same as 5-1 or as 3+1
User Grissel
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16 votes
16 votes

Answer:

5-1, known colloquially as four, 4, or 1+3.

Explanation:

User Brgerner
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