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(2/3)*(x-12) = 8 // - 8
(2/3)*(x-12)-8 = 0
2/3*(x-12)-8 = 0
2/3*(x-12)-8 = 0
2/3*x-16 = 0
2/3*x-16 = 0
2/3*x-16 = 0 // + 16
2/3*x = 16 // : 2/3
x = 16/2/3
x = 24
x = 24
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