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((3*x-28)^1)/2 = x // - x
((3*x-28)^1)/2-x = 0
(3*x-28)/2-x = 0
(3*x-28)/2+(2*(-x))/2 = 0
3*x+2*(-x)-28 = 0
x-28 = 0
(x-28)/2 = 0
(x-28)/2 = 0 // * 2
x-28 = 0
x-28 = 0 // + 28
x = 28
x = 28
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