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6*(x-(1/2))-20 = 0
6*(x-1/2)-20 = 0
6*(x-1/2)-20 = 0
6*x-23 = 0
6*x-23 = 0
6*x-23 = 0 // + 23
6*x = 23 // : 6
x = 23/6
x = 23/6
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