यदि \(\rm\frac{a}{x} + \frac{y}{b} =1\) और \(\rm\frac{b}{y} + \frac{z}{c} =1\), तो \(\rm\frac{x}{a} + \frac{c}{z} \) किसके बराबर होगा?

1
0
2
\(\rm \frac{b}{y}\)
3
1
4
\(\rm \frac{y}{b}\)

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