Multiply First equation by 2: 6y - 2x = 0
Add second equation to this: 6y - 2x + 2x + 2y = 0 + 7
Simplify: 8y = 7 so y = 0.875 and x = 2.625
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The result of the equation x + 2y - 2x - y equals x simplifies to y - x.
(3, 2)
(-2, 4)
(-1, 5)
(4, -1)