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(2/3)*(x-4) = -12 // + 12
(2/3)*(x-4)+12 = 0
2/3*(x-4)+12 = 0
2/3*(x-4)+12 = 0
2/3*x+28/3 = 0
2/3*x+28/3 = 0
2/3*x+28/3 = 0 // - 28/3
2/3*x = -28/3 // : 2/3
x = -28/3/2/3
x = -14
x = -14
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