Question

resolva a equação (h+1)/(h-1)=12

Answer 1

(h+1)(h-1)=12
h2-1=12
h2=12+1
h=$\sqrt{x}$13

Answer 2

$\mathsf{ \dfrac{h+1}{h-1}=12 }\\\\ \mathsf{h+1=12\cdot(h-1)}\\ \mathsf{h+1=12h-12}\\ \mathsf{12h-h=1+12}\\ \mathsf{11h=13}\\\\ \mathsf{h= \dfrac{13}{11} }\\\\\\ \mathsf{S=\left\{ \dfrac{13}{11}\right\} }$