\(\frac{3}{{\sqrt 7 – 1}} – \frac{{\sqrt 7 – \sqrt {21} }}{{2 – 2\sqrt 3 }}\) A \(\frac{1}{2}\) B \(\frac{{\sqrt 7 }}{2}\) C \(\frac{{ – 1}}{2}\) D \(\frac{{ – \sqrt 7 }}{2}\)
\(\frac{3}{{\sqrt 7 – 1}} – \frac{{\sqrt 7 – \sqrt {21} }}{{2 – 2\sqrt 3 }}\) A \(\frac{1}{2}\) B \(\frac{{\sqrt 7 }}{2}\) C \(\frac{{ – 1}}{2}\) …