Teaching CSIR NET Mock Test Series Quantitative Aptitude Algebra Linear Equation in 2 Variable

If \(\rm \frac{a}{x} - \frac{b}{y} = 0, \frac{ab^2}{x} + \frac{a^2b}{y} = a^2 +b^2; (x, y \ne 0)\) the value of x + y equal to

1
a
2
2a
3
a + b
4
a - b
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