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12344444:
Gillian purchased 25 books at the library book sale. Each hardcover book cost $1.50, and each paperback book cost $0.50. Gillian spent a total of $26.50. The book costs can be represented by the system of equations below. h + p = 25 1.50h + 0.50p = 26.50 How many paperback books did Gillian buy? 11 12 13 14
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silvernight269:
Sytem again. Multiply the whole fist equation by 0.5
silvernight269:
Then get rid of the p
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