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7*x+2/9 = 128/9 // - 128/9
7*x+2/9-(128/9) = 0
7*x+2/9-128/9 = 0
7*x-14 = 0 // + 14
7*x = 14 // : 7
x = 14/7
x = 2
x = 2
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