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x一0.84x二怎么解
x一0.84x=21.6
x一0.25x=2.8十0.2
x一0.36x=20x0.8
x一0.26x=2.59
x一0.25x二0.9
x一0.54x二2.3
x-0.78x=11.22
x一0.125x二8
x一0.8x二10
x一0.32x=0.204
x-0.8x=22.
x一0.8=2.4
x一0.76x=0.84
x十0.23x二2.46
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