(x-1/0.25)-(x/12.5)=1.(考考大家)
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(x-1/0.25)-(x/12.5)=1.(考考大家)
(x-1/0.25)-(x/12.5)=1.(考考大家)
(x-1/0.25)-(x/12.5)=1.(考考大家)
两边乘12.5
50x-50-x=15
50x-x=50+15
49x=65
x=65/49
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x-1/0.25-x/12.5=1.2 x等于多少?
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