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x in (-oo:+oo)
-2 = (5/2)*x-6 // - (5/2)*x-6
6-((5/2)*x)-2 = 0
(-5/2)*x-2+6 = 0
4-5/2*x = 0 // - 4
-5/2*x = -4 // : -5/2
x = -4/(-5/2)
x = 8/5
x = 8/5
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