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3*(x-6) = 108/12 // - 108/12
3*(x-6)-(108/12) = 0
3*(x-6)-9 = 0
3*(x-6)-9 = 0
3*x-27 = 0
3*x-27 = 0
3*x-27 = 0 // + 27
3*x = 27 // : 3
x = 27/3
x = 9
x = 9
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