Question

simplifique a expressão...
mx+m-x-1/m²-1

Answer 1

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