Question

Metodo de sustitución de
6x - 5y= -8
4x + 7y= 3
Con operaciones por favor

Answer 1

$\left \{ {{-4(6x-5y= -8)} \atop {6(4x+7y=3)}} \right.$

$\left \{ {{-24x+20y=32} \atop {24x+42y=18}} \right.$ sumamos

62y = 50 => y = 25/31

REEMPLAZAMOS...

6x-5y=-8

$6x-5(\frac{25}{31}) = -8$

$6x-\frac{125}{131} = -8$

$\frac{(6x)(131)-125}{131} = -8$

786x - 125 = -1048

786x = -923

x = -923/786