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(2/3)*(3*x-(19/18)+4) = 5/9 // - 5/9
(2/3)*(3*x-(19/18)+4)-(5/9) = 0
(2/3)*(3*x-19/18+4)-5/9 = 0
2/3*(3*x+53/18)-5/9 = 0
(2/3*9*(3*x+53/18))/9-5/9 = 0
2/3*9*(3*x+53/18)-5 = 0
18*x+38/3 = 0
(18*x+38/3)/9 = 0
(18*x+38/3)/9 = 0 // * 9
18*x+38/3 = 0
18*x+38/3 = 0 // - 38/3
18*x = -38/3 // : 18
x = -38/3/18
x = -19/27
x = -19/27
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