若b+1/c=1,c+1/a=1,求ab+1/b的值.

问题描述:

b+

1
c
=1,c+
1
a
=1
,求
ab+1
b
的值.

b+

1
c
=1,
b=1−
1
c
=
c−1
c

c+
1
a
=1

a=
1
1−c

ab+1
b
=a+
1
b
=
1
1−c
+
c
c−1
=1.