Question

- 2X + y - 7 = 0 2 x + y + 4 = 0 - X + y + 4 = 0 2X + y - 4 = 0

Answer 1

Respuesta:

solucion:

$\left \{ {{2x+y-7=0,2x+y+4} \atop {0,2x+y-4=0}} \right.$

$\left \{ {{x=\frac{55}{9} } \atop {0,3x+y-4=0}} \right.$

$\left \{ {{8=8} \atop {0=0}} \right.$

=

$(x,y)=(\frac{55}{9} ,\frac{25}{9})$

saludos