已知abc=1,化简 a/ab+a+1 + b/bc+b+1 + c/ca+c+1.

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已知abc=1,化简 a/ab+a+1 + b/bc+b+1 + c/ca+c+1.
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已知abc=1,化简 a/ab+a+1 + b/bc+b+1 + c/ca+c+1.
已知abc=1,化简 a/ab+a+1 + b/bc+b+1 + c/ca+c+1.

已知abc=1,化简 a/ab+a+1 + b/bc+b+1 + c/ca+c+1.
a/ab +a+1 + b/bc+b+1 + c/ca+c+1
=ac/abc +a+1 + ab/abc+b+1 + bc/bca+c+1
=ac+a+1+ab+b+1+bc+c+1
=a+b+c+ab+ac+bc+3