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(1/3)*x-(2/3) = 5/6 // - 5/6
(1/3)*x-(2/3)-(5/6) = 0
(1/3)*x-2/3-5/6 = 0
1/3*x-3/2 = 0 // + 3/2
1/3*x = 3/2 // : 1/3
x = 3/2/1/3
x = 9/2
x = 9/2
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