45*(100-x)-35*(100-x)化简
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45*(100-x)-35*(100-x)化简45*(100-x)-35*(100-x)化简45*(100-x)-35*(100-x)化简45*(100-x)-35*(100-x)=(100-x)(4
45*(100-x)-35*(100-x)化简
45*(100-x)-35*(100-x)化简
45*(100-x)-35*(100-x)化简
45*(100-x)-35*(100-x)
=(100-x)(45-35)
=10(100-x)
=1000-10x
=(100-x)(45-35)
=10*(100-x)
=1000-10x
(X+X)+(X-X)+(X*X)+(X/X)=100
45*(100-x)-35*(100-x)化简
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