Respuesta :

{y, x} = { 11, -3}

Substitution :

// Solve equation [2] for the variable y


[2] y = 2x - 5

// Plug this in for variable y in equation [1]

[1] (2x-5) - 3x = -2
[1] - x = 3
// Solve equation [1] for the variable x


[1] x = - 3
// By now we know this much :

y = 2x-5
x = -3
// Use the x value to solve for y

y = 2(-3)-5 = -11

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