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7*x-(2/9) = 6 // - 6
7*x-(2/9)-6 = 0
7*x-2/9-6 = 0
7*x-56/9 = 0 // + 56/9
7*x = 56/9 // : 7
x = 56/9/7
x = 8/9
x = 8/9
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