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Mathematics, 05.09.2021 15:50 osmanysalvador9

John bought some pens and pencils at book store. if 5 pens and 3 pencils cost $13 while 5 pencils and 3 pens cost $11 instead, find the cost of a pen.​

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John bought some pens and pencils at book store. if 5 pens and 3 pencils cost $13 while 5 pencils an...
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