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x in (-oo:+oo)
3*x-5 = 13/2 // - 13/2
3*x-(13/2)-5 = 0
3*x-13/2-5 = 0
3*x-23/2 = 0 // + 23/2
3*x = 23/2 // : 3
x = 23/2/3
x = 23/6
x = 23/6
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