The correct equation to represent the number of boxes Trina sold is:
n + 14 = 37
To find how many boxes Trina sold (n), we can solve this equation:
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Start with the equation:
\( n + 14 = 37 \) -
Subtract 14 from both sides:
\( n = 37 - 14 \)
\( n = 23 \)
Thus, Trina sold 23 boxes.