x-1=1/2x+1/4x+1/8x按步骤怎么做
1个回答
解由x-1=1/2x+1/4x+1/8x
得x-1=4/8x+2/8x+1/8x
即x-1=7x/8
移项得
x-7x/8=1
即x/8=1
解得x=8
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