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4*x-(12*y)+4/8 = 0
4*x-12*y+4/8 = 0
4*x-12*y+1/2 = 0 // - 1/2-12*y
4*x = -(1/2-12*y) // : 4
x = (-(1/2-12*y))/4
x = (-(1/2-12*y))/4
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