1-75%X=0.75 求x?
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1-75%X=0.75求x?1-75%X=0.75求x?1-75%X=0.75求x?1-75%X=0.751-0.75x=0.750.75x=1-0.750.75x=0.25x=0.75分之0.25x
1-75%X=0.75 求x?
1-75%X=0.75 求x?
1-75%X=0.75 求x?
1-75%X=0.75
1-0.75x=0.75
0.75x=1-0.75
0.75x=0.25
x=0.75分之0.25
x=3分之1
x=三分之一
1-75%X=0.75
1=75%X+0.75
1-0.75=75%X
75%X=0.25
1-75%X=0.75 求x?
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