Respostas

2013-11-21T22:09:03-02:00
 \frac{8}{x} =  \frac{6}{x - 1}      // AGORA MULTIPLICA CRUZADO
6x = 8(x-1)
6x = 8x - 8
-2x = -8  (-1)
x=  \frac{8}{2}
x = 4