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2*x-((2/3)*x)+1/2 = 19/6 // - 19/6
2*x-((2/3)*x)+1/2-(19/6) = 0
2*x+(-2/3)*x+1/2-19/6 = 0
4/3*x-8/3 = 0 // + 8/3
4/3*x = 8/3 // : 4/3
x = 8/3/4/3
x = 2
x = 2
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