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7*x+2/9 = 191/9 // - 191/9
7*x+2/9-(191/9) = 0
7*x+2/9-191/9 = 0
7*x-21 = 0 // + 21
7*x = 21 // : 7
x = 21/7
x = 3
x = 3
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