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Mathematics, 26.03.2020 19:01 4presidents

Hue is arranging chairs. She can form 4 rows of a given length with 3 chairs left over, or 9 rows of that
same length if she gets 12 more chairs. Complete the equation and solve it to find how many chairs are in that row length. In your equation, use the variable x to represent the number of chairs in each row.

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