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x in (-oo:+oo)
(-29/8)*((23/8)*x+1) = -87 // + 87
(-29/8)*((23/8)*x+1)+87 = 0
87-29/8*(23/8*x+1) = 0
87-29/8*(23/8*x+1) = 0
667/8-667/64*x = 0
667/8-667/64*x = 0
667/8-667/64*x = 0 // - 667/8
-667/64*x = -667/8 // : -667/64
x = -667/8/(-667/64)
x = 8
x = 8
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