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六年级上册数学解方程100道北师大版（六年级上册数学解方程100道）
1、X-2/7X=3/470%X + 20%X = 3.625% + 10X =4/5X - 15%X = 68X+3/8 X=1215X-35/21 =5/1...
2025-06-04 知识与问答 浏览：446
1、X-2/7X=3/470%X + 20%X = 3.625% + 10X =4/5X - 15%X = 68X+3/8 X=1215X-35/21 =5/1...
2025-06-04 知识与问答 浏览：446