Mathematics, 23.12.2019 05:31, sssssaaaaaddddd7485

There are 20 hardcover and paperback books in a box. there are 10 more hard cover books then paperback books. right and solve a system of linear equations to find the number of paperback books and the number of hard cover books

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There are 20 hardcover and paperback books in a box. there are 10 more hard cover books then paperba...