1/a+1/b=2012/a+b
(a+b)/ab=2012/(a+b)
(a+b)²/ab=2012
(a²+2ab+b²)/ab=2012
(a²+b²)/ab+2=2012
(a²+b²)/ab=2010
a/b+b/a=2010
答:a/b+b/a=2010
1/a+1/b=2012/a+b
(a+b)/ab=2012/(a+b)
(a+b)²/ab=2012
(a²+2ab+b²)/ab=2012
(a²+b²)/ab+2=2012
(a²+b²)/ab=2010
a/b+b/a=2010
答:a/b+b/a=2010