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8 July, 19:53

Ella buys a book and pen for $14. The cost of the book is two dollars more than twice the cost of the pen. write a system of linear equations for the situation. Then find the cost of each item. Let x represent the cost of the pen, and let y represent the cost of the book

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  1. 8 July, 22:32
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    Book+pen=14 book=2+2*pen

    2+2pen+pen=14

    3pen=14-2

    pen=4

    replace pen by its value---> book=2+2*4

    book=10
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