Question

Ache o valor de x e y na seguinte equação
X= y+6
X+y=54

Answer 1

Resposta:

c.s (x;y) -> (30;24)

Explicação passo-a-passo:

$\left \{ {{x=y+6} \atop {x+y = 54}} \right. <=>\left \{ {{x=y+6} \atop {x = 54-y}} \right. <=>\left \{ {{x=y+6} \atop {y+6 = 54-y}} \right. <=>>\left \{ {{x=y+6} \atop {y+y = 54-6}} \right.<=>\left \{ {{x=y+6} \atop {2y = 48}} \right.\\\\\left \{ {{x=y+6} \atop {y=48/2}} \right.<=>\left \{ {{x=24+6} \atop {y= 24}} \right.<=>\left \{ {{x=30} \atop {y= 24}} \right.$

c.s (x;y) -> (30;24)