Question

me ajudem é muito importante

Answer 1

Resposta:

04) x+y = 0 ;  01) a) y=1 x=6

Explicação passo-a-passo:

$\left \{ {{2x+y=2} \atop {3x+y=4}} \right. \\\left \{ {{y=-2x+2} \atop {3x+y=4}} \right. \\\left \{ {{-----} \atop {3x + (-2x+2)=4}} \right.\\\left \{ {{-----} \atop {3x-2x=4-2}} \right.\\\left \{ {{-----} \atop {x=2}} \right. \\ \left \{ {{y=-2X2+2} \atop {-----}} \right. \\\left \{ {{y=-2} \atop {------}} \right. \\\\x+y = 2 +(-2) = 0$