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x in (-oo:+oo)
104 = (3/2)*x // - (3/2)*x
104-((3/2)*x) = 0
(-3/2)*x+104 = 0
104-3/2*x = 0 // - 104
-3/2*x = -104 // : -3/2
x = -104/(-3/2)
x = 208/3
x = 208/3
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