document.write( "Question 1050163: Judy has 15 books in her library. She bought several books at a thrift store on Saturday. She now has 84 books in her library. How many books did she buy at the thrift store? Create an equation and graph it.
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Algebra.Com's Answer #665740 by advanced_Learner(501)\"\" \"About 
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15+n=84
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