Question

3x + y = -5 |5r–2y = -1

Answer 1

Resposta:

[3X + Y = -5].2 => 6X + 2Y = -10

5X-2Y = -1       => 5X - 2Y = -1

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=> 11X = -11 => X = -1

3X + Y = -5 => 3.(-1) + Y = -5 => Y = -5 + 3

=> Y = -2