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Question

# Add each row and each column . The sum of the row totals and the sum of the column totals should be equal.$\begin{array}{r} 6+4+5=15 \\ 3+6+7=16 \\ +8+5+2=15 \\ \hline 171514 \end{array}$

Solution

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For this exercise, we add each row to get the sum of the given two numbers given on each row. Then, we find the sum of each column and get the total sum of all the columns. We then compare if this equals the total sum of the rows.

Can we interchange adding the columns first before the rows?

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