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2x - 4y = 14
12x + 12y = 12
6x - 12y = 42
18x = 54
x = 3
3x + 3y = 3
3(3) + 3y = 3
9 + 3y = 3
3y = -6
y = -2
4x - 3y = 4(3) - 3(-2) = 12 - 6 = 6