规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2a规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2ab-a的值为多少?

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规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2a规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2ab-a的值为多少?规定一种新运算a*

规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2a规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2ab-a的值为多少?
规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2a
规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2ab-a的值为多少?

规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2a规定一种新运算a*b=a-b/ab,a*b=3,则分式2a+3ab-2b/b-2ab-a的值为多少?
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