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5*x+5/6 = 2/3-(6*x) // - 2/3-(6*x)
5*x+6*x+5/6-(2/3) = 0
5*x+6*x+5/6-2/3 = 0
11*x+1/6 = 0 // - 1/6
11*x = -1/6 // : 11
x = -1/6/11
x = -1/66
x = -1/66
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