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(4*(x-3)^1)/2 = 8 // - 8
(4*(x-3)^1)/2-8 = 0
(4*(x-3))/2-8 = 0
(4*(x-3))/2+(-8*2)/2 = 0
4*(x-3)-8*2 = 0
4*x-28 = 0
(4*x-28)/2 = 0
(4*x-28)/2 = 0 // * 2
4*x-28 = 0
4*x-28 = 0 // + 28
4*x = 28 // : 4
x = 28/4
x = 7
x = 7
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