12.5-0.25X=X

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12.5-0.25X=X

解 12.5-0.25x=x
12.5=x+0.25x
12.5=1.25x
得 x=10

12.5-0.25X=X
x+0.25x=12.5
1.25x=12.5
x=10

12.5=X+0.25X
X=10

12.5-0.25X=X x-1/0.25-x/12.5=1.2 x等于多少? 0.25x-百分之12.5x=10 0.25x-百分之12.5x=10 （X+X)+(X-X)+(X*X)+(X/X)=100 （x-4)-(x+4)=0.25x 66=X+0.25X求X 0.25x+3.6=x解x X-12.5%X=(56-X)+12.5%X x-0.25x+1=10.4x+0.25x-1 x-0.25=0.25x {x+10}x{x+10}=0.25x x+12.5=3.5x x+12.5=3.5x x+12.5=3.5x 12.5％x+1=x 12.5％x+1=x 6x-x=12.5