Question

Necesito ayuda de estas preguntas

Answer 1

Respuesta:

$A\left \{ {{5+y=5} \atop {5-y=1}} \right.\\ ....2y=4\\ ......y=2 \\\\B\left \{ {{2x+y=-3} \atop {3x-y=-2}} \right.\\ ....5x=-5\\ ......x=-1 :y= -1\\\\\\C\left \{ {{x+4y=21} \atop {2x-3y=-13}} \right.\\\\C\left \{ {{2x+8y=42} \atop {2x-3y=-13}} \right.\\\\ ....11y=55\\......y=5 ; x=1\\\\D\left \{ {{2x+y=8} \atop {3x-2y=5}} \right.\\\\D\left \{ {{4x+2y=16} \atop {3x-2y=5}} \right.\\\\.......7x=21\\........x=3:y=2$

y listo espero q lo entiendas :3