化简 (a^-1 +b^-1)/(ab)^-1
问题描述:
化简 (a^-1 +b^-1)/(ab)^-1
答
=(1/a+1/b)ab
=a+b
化简 (a^-1 +b^-1)/(ab)^-1
=(1/a+1/b)ab
=a+b