Question

urgente 14x-11 y=-29 13y-8x=30

Answer 1

Respuesta:

$x = - \frac{1}{2} \\ y = 2$

Explicación paso a paso:

$y = \frac{29}{11} + \frac{14}{11} x \\ y = \frac{30}{13} + \frac{8}{13} x$

$\frac{29}{11} + \frac{14}{11} x = \frac{30}{13} + \frac{8}{13} x \\ \frac{29}{11} - \frac{30}{13} = \frac{8}{13} x - \frac{14}{11} x \\ \frac{47}{143} = - \frac{94}{143} x \\ \frac{47}{143} \times ( - \frac{143}{94} ) = x \\ - \frac{47}{94} = x \\ - \frac{1}{2} = x$

$y = \frac{29}{11} + \frac{14}{11} \times ( - \frac{1}{2} ) \\ y = \frac{29}{11} - \frac{7}{11} \\ y = \frac{22}{11} = 2$