已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?

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已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?1/a-

已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?
已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?

已知1/a-1/b=5,求2a+3ab-2b/a-2a-b的值?
1/a-1/b=5
(b-a)/ab=5
b-a=5ab
a-b=-5ab
(2a+3ab-2b)/(a-2ab-b)
=[2(a-b)+3ab]/[(a-b)-2ab]
=(-10ab+3ab)/(-5ab-2ab)
=-7/(-7)
=1