Mathematics
Mathematics, 22.02.2021 20:40, PinkDivaGirl02

Two coworkers picked up some writing instruments at
the office supply store. Ava
selected 9 boxes of pencils
and 4 boxes of ballpoint
pens, paying $30. Next, Tony
spent $39 on 6 boxes of
pencils and 9 boxes of
ballpoint pens. How much
does a box of each cost? using elimination method.

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Answers: 2
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