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y. = 14.000-2x
2x. - y = 12.000
2x. - (14.000-2x)= 12.000
4x. - 14.000. = 12.000
4x. = 12.000 + 14.000
4x. = 26.000
x. = 6.500
y. = 1.000
2x - y = 12.000 / x2 / 4x - 2y = 24.000 _
4y = 4000
y = 1000