From a first grade, extra credit, homework assignment.

1 answer:

3 0

Here's my guess:
$\begin{array}{ccc}-3&17&37\\29&38&9\\1&21&41\end{array}$

It looks like numbers either side of the center one add to 38, and that numbers in the top and bottom rows differ by 20.

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Answer:

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Step-by-step explanation:

Consider the provided information.

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