bisakah disederhanakan?

[tex] \frac{3b - bx}{cx - 3c} = \frac{-b(x - 3)}{c(x - 3)} \\ = - \frac{b}{c} \\ \\ \frac{3}{x+1} + \frac{3}{x-1} \\ = \frac{3(x - 1)+3(x + 1)}{x^2 - 1} \\ = \frac{6x}{x^2 - 1} [/tex]