若a/b+c=b/c+a=c/a+b=k(a+b+c≠0),则k的值为_.
问题描述:
若
=a b+c
=b c+a
=k(a+b+c≠0),则k的值为______. c a+b
答
∵
=a b+c
=b c+a
=k,c a+b
∴
=k,a+b+c 2(a+b+c)
∴k=
.1 2
故答案为:
.1 2