若2a=3b,则a/b= ,a-b/a+3b= .

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若2a=3b,则a/b= ,a-b/a+3b= .

若2a=3b,则a/b= ,a-b/a+3b= .
若2a=3b,则a/b= ,a-b/a+3b= .

若2a=3b,则a/b= ,a-b/a+3b= .