Question

simplificando a expressão mx+m-x-1/m²-1 obtemos

Answer 1

$\frac{mx+m-x-1}{m^2-1}=\frac{m\cdot(x+1)-1 \cdot(x+1)}{(m+1)\cdot(m-1)}=\frac{(x+1)\cdot(m-1)}{(m+1)\cdot(m-1)} =\frac{x+1}{m+1}$

Answer 2

 mx+m -x -1 = 
m(x+1) -1(x+1) 
(x+1).(m-1) > 

m²-1 = 
(m+1).(m-1) > 

mx+m-x-1.....(x+1).(m-1)........x+1 
------------- = ------------------ = -------- >> 
m² - 1...........(m+1).(m-1).......m+1