Question

equações fracionarias​

Answer 1

$\frac{x + 3}{x} = \frac{x + 9}{x + 4} \\ (x + 3)(x + 4) = x(x + 9) \\ {x}^{2} + 7x + 12 = {x}^{2} + 9x \\ {x}^{2} - {x}^{2} + 7x - 9x = - 12 \\ - 2x = - 12 \\ x = \frac{ - 12}{ - 2} \\ x = 6$