Question

Сократить $frac{7+ sqrt{7} }{3 sqrt{7} }$

Answer 1

$frac{7+ sqrt{7} }{3 sqrt{7} } = frac{3 sqrt{7}(7+ sqrt{7}) }{9*7} = \ \ = frac{7 sqrt{7}+7 }{3*7}= frac{ sqrt{7}+1 }{3}$