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x in (-oo:+oo)
4*x+x+1/8 = -199/8 // + -199/8
4*x+x+1/8-(-199/8) = 0
4*x+x+1/8+199/8 = 0
5*x+25 = 0 // - 25
5*x = -25 // : 5
x = -25/5
x = -5
x = -5
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