{ "item_title" : "The Substitution Method", "item_author" : [" Yongcheng Chen "], "item_description" : "This is the sixth book of Math Contest Books Series. The book introduces the substitution method. The book can be used by students preparing for math competitions such as Mathcounts, AMC 8/10/12, and AIME. Each chapter consists of (1) basic skill and knowledge section with examples, (2) exercise problems, and (3) detailed solutions to all problems. 9th book: Problem Solving Using Auxiliary Lineshttps: //www.amazon.com/dp/1975681754 10th book: https: //www.amazon.com/Problem-Solving-Using-Vietas-Theorem/dp/1542800056", "item_img_path" : "https://covers4.booksamillion.com/covers/bam/1/54/274/389/1542743893_b.jpg", "price_data" : { "retail_price" : "19.98", "online_price" : "19.98", "our_price" : "19.98", "club_price" : "19.98", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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