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3*x-(2/3) = 7 // - 7
3*x-(2/3)-7 = 0
3*x-2/3-7 = 0
3*x-23/3 = 0 // + 23/3
3*x = 23/3 // : 3
x = 23/3/3
x = 23/9
x = 23/9
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