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(x-1)/6-((x-2)/9) = 5/18 // - 5/18
(x-1)/6-((x-2)/9)-(5/18) = 0
(x-1)/6-((x-2)/9)-5/18 = 0
(x-1)/6+(-1*(x-2))/9-5/18 = 0
(9*18*(x-1))/(6*9*18)+(-1*6*18*(x-2))/(6*9*18)+(-5*6*9)/(6*9*18) = 0
9*18*(x-1)-1*6*18*(x-2)-5*6*9 = 0
54*x-270+54 = 0
54*x-216 = 0
(54*x-216)/(6*9*18) = 0
(54*x-216)/(6*9*18) = 0 // * 6*9*18
54*x-216 = 0
54*x-216 = 0 // + 216
54*x = 216 // : 54
x = 216/54
x = 4
x = 4
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