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(2/3)*x = 2/3-((1/6)*y) // - 2/3-((1/6)*y)
(2/3)*x+(1/6)*y-(2/3) = 0
(2/3)*x+(1/6)*y-2/3 = 0
2/3*x+1/6*y-2/3 = 0 // - 1/6*y-2/3
2/3*x = -(1/6*y-2/3) // : 2/3
x = (-(1/6*y-2/3))/2/3
x = 3/2*(2/3-(1/6*y))
x = 3/2*(2/3-(1/6*y))
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