From (1), y = 5 + x . . . (3) Putting (3) into (2), gives 3x + 5 + x = 1 4x = 1 - 5 = -4 x = -4/4 = -1
From (3), y = 5 + (-1) = 5 - 1 = 4
Therefore, solution is (-1, 4)
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Answer from: Quest
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