જો b + c = ax, c + a = by, a + b = cz, તો \(\frac{1}{9}\left[ {\frac{1}{{x\; + \;1}} + \frac{1}{{y + 1}}\; + \;\frac{1}{{z\; + \;1}}} \right]\)કિંમત શોધો.

1
1
2
1/3
3
0
4
1/9

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