Question

6x + y = 1 -2x + y = 3 qual é a resposta?

Answer 1

$\left \{ {{6x + y = 1} \atop { -2x + y = 3 }} \right.$

y = 1 -6x

-2x +1 -6x = 3
-8x = 2
x = -2/8  → -1/4

y = 1 -6/4
y = (4 -6)/4
y = -2/4
y = -1/2