Sharing David Wees’s system of equations problem

Saw a neat tweet from David Wees today. We are running around a bit tonight, but I had enough time to have the boys take a quick look before running out the door.

Here’s the problem:

Here’s my younger son talking through the problem:

and here’s what my older son had to say:

I saw in a later tweet that Wees intended to use this problem with younger kids (2nd and 3rd graders), but I’m still happy that the boys were able to talk through the problem and explain their reasoning.

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