3x - 5y + 2= 20
3x - 5 y = 18
4x + 6y -2 = -1
4x + 6y = 1
3x + 2y + 2 = 6
3x + 2y = 4
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3x - 5y + 2= 20
3x - 5 y = 18
4x + 6y -2 = -1
4x + 6y = 1
3x + 2y + 2 = 6
3x + 2y = 4