一张桌子的价钱是椅子的3倍,买桌子比买椅子多花了392元,桌子和已经单价各多少元?
请用方程解答
人气：275 ℃ 时间：2020-06-20 10:33:11
解答
椅子为x 则桌子为3x 3x-x=392 x=196 桌子为3x=588
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