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3*x+2/9 = x+1/18 // - x+1/18
3*x-x+2/9-(1/18) = 0
3*x-x+2/9-1/18 = 0
2*x+1/6 = 0 // - 1/6
2*x = -1/6 // : 2
x = -1/6/2
x = -1/12
x = -1/12
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