№14
\[\begin{array}{l}
{\text{Using digits 1 to 9}}{\text{, arrange the numbers in three groups}}\\
{\text{so that the sum is the same in each group}}{\text{. Is there more}}\\
{\text{than one way to do this? Explain}}{\text{.}}
\end{array}\]
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Your solution
Целые числа 5/2 \[ \to \] Таблицы и множества
smart: 10