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(2/3)*(4*x-8) = 8 // - 8
(2/3)*(4*x-8)-8 = 0
2/3*(4*x-8)-8 = 0
2/3*(4*x-8)-8 = 0
8/3*x-40/3 = 0
8/3*x-40/3 = 0
8/3*x-40/3 = 0 // + 40/3
8/3*x = 40/3 // : 8/3
x = 40/3/8/3
x = 5
x = 5
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