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(7*x)/9-(2/9) = 19/9 // - 19/9
(7*x)/9-(2/9)-(19/9) = 0
(7*x)/9-2/9-19/9 = 0
7/9*x-7/3 = 0 // + 7/3
7/9*x = 7/3 // : 7/9
x = 7/3/7/9
x = 3
x = 3
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