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