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x in (-oo:+oo)
5*x-(3/2) = 6 // - 6
5*x-(3/2)-6 = 0
5*x-3/2-6 = 0
5*x-15/2 = 0 // + 15/2
5*x = 15/2 // : 5
x = 15/2/5
x = 3/2
x = 3/2
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