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(2/3)*x+4/9 = (-1/3)*x-(1/9) // - (-1/3)*x-(1/9)
(2/3)*x-((-1/3)*x)+4/9+1/9 = 0
(2/3)*x+(1/3)*x+4/9+1/9 = 0
x+5/9 = 0 // - 5/9
x = -5/9
x = -5/9
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