(2012.福州)计算(x-1)/x+1/x
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(2012.福州)计算(x-1)/x+1/x(2012.福州)计算(x-1)/x+1/x(2012.福州)计算(x-1)/x+1/x(x-1)/x+1/x=(x-1＋1)/x=x/x=1
(2012.福州)计算(x-1)/x+1/x
(2012.福州)计算(x-1)/x+1/x
(2012.福州)计算(x-1)/x+1/x
(x-1)/x+1/x
=(x-1＋1)/x
=x/x
=1
(2012.福州)计算(x-1)/x+1/x
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