The simplest form of \( \frac{{{x^3}}}{{{x^3} + {y^3}}} - \frac{{x}}{{(x + y)}}\) is
1
\({xy\over(x + y)}\left(\frac{{{(x - y)}}}{{({x^2} - xy + {y^2})}}\right)\)
2
\(\frac{{x(x + y)}}{{y({x^2} + xy + {y^2})}}\)
3
\( \frac{{x(x - y)}}{{y({x^2} + xy + {y^2})}}\)
4
\({x\over(x + y)}\left(\frac{{{(x - y)}}}{{({x^2} - xy + {y^2})}}\right)\)