Question

X/x-1-3x/x+2=-2 me ajuda

Answer 1

         $\frac{x}{x-1} - \frac{3x}{x+2}=-2 **********mmc=(x-1)(x+2) = x^2+x-2$
         x(x+2) - 3x(x-1) = -2(x-1)(x+2)
         x² + 2x - 3x² + 3x = -2(x²+x-2)
         -2x² + 5x  = -2x² - 2x + 4
         -2x² + 5x + 2x² + 2x = 4
                                    7x = 4
                                      x = 4/7