If bc+ab+ca=abc, then the value of $$ {b+c\over {bc(a-1)}}+{a-c\over {ac(b-1)}}+{a+b\over {ab(c-1)}}$$ is
5 950 5f2d2c7f79b9e641a76158c2
Q:
If bc+ab+ca=abc, then the value of $$ {b+c\over {bc(a-1)}}+{a-c\over {ac(b-1)}}+{a+b\over {ab(c-1)}}$$ is
- 12false
- 21true
- 30false
- 4$$ {-1\over {2}}$$false
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