$a=x,\quad b=x+1, \quad c=x+2$ olsun.$(x \in \mathbb Z)$
$\bigg(1+\dfrac{1}{x}\bigg).\bigg(1+\dfrac{1}{x+1}\bigg).\bigg(1+\dfrac{1}{x+2}\bigg)=\bigg(\dfrac{x+1}{x}\bigg).\bigg(\dfrac{x+2}{x+1}\bigg).\bigg(\dfrac{x+3}{x+2}\bigg)=\dfrac{9}{8}$
Sadeleştirme yapılırsa $x$ bulunur.