Question

X+1 5
___ = __
X-1 6

Answer 1

$\dfrac{x+1}{x-1} = \dfrac{5}{6} \to~~~~ multiplique~~~cruzado:\\\\ 6(x+1)=5(x-1)\to\\\\ 6x+6=5x-5\to\\\\ 6x-5x=-5-6\to\\\\ \large\boxed{x=-11}$