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x in (-oo:+oo)
x/5-8 = 3*x-(22/3) // - 3*x-(22/3)
x/5-(3*x)+22/3-8 = 0
x/5-3*x+22/3-8 = 0
-14/5*x-2/3 = 0 // + 2/3
-14/5*x = 2/3 // : -14/5
x = 2/3/(-14/5)
x = -5/21
x = -5/21
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