已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值

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已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值1

已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值
已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值

已知:1/a+1/b=3,求2a+3ab+2b/a+2ab+b的值
1/a+1/b=3
=a+b/ab=3
设a+b=3x,ab=x
带入得
6x+3x/3x+2x
=9x/5x
=9/5