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x in (-oo:+oo)
-((1/8)*x)-24 = (3/8)*x // - (3/8)*x
-((1/8)*x)-((3/8)*x)-24 = 0
(-1/8)*x+(-3/8)*x-24 = 0
-1/2*x-24 = 0 // + 24
-1/2*x = 24 // : -1/2
x = 24/(-1/2)
x = -48
x = -48
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