6.8X-1.4X=0.8怎么解
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6.8X-1.4X=0.8怎么解6.8X-1.4X=0.8怎么解6.8X-1.4X=0.8怎么解5.4X=0.8X=0.8÷5.4X=4/27
6.8X-1.4X=0.8怎么解
6.8X-1.4X=0.8怎么解
6.8X-1.4X=0.8怎么解
5.4X=0.8
X=0.8÷5.4
X=4/27
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