Mathematics, 16.10.2021 05:50 trixxytang

8 pens and 5 pencils cost $31 and 4 pens and 7 pencils cost $29. Find the cost of 3 pens and 3 pencils

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8 pens and 5 pencils cost $31 and 4 pens and 7 pencils cost $29. Find the cost of 3 pens and 3 penci...