other govt exam NPCIL Assistant Grade 1 (Paper I & Paper II) 2025 Mock Test Quantitative Aptitude Algebra Linear Equation in 2 Variable
If \(\frac{{3x - 1}}{x} + \frac{{5y - 1}}{y} + \frac{{7z - 1}}{z} = 0\), then what is the value of \(\frac{1}{x} + \frac{1}{y} + \frac{1}{z}?\)
1
-3
2
0
3
15
4
21