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x in (-oo:+oo)
(1/4)*x = (3/8)*x-(1/4) // - (3/8)*x-(1/4)
(1/4)*x-((3/8)*x)+1/4 = 0
(1/4)*x+(-3/8)*x+1/4 = 0
1/4-1/8*x = 0 // - 1/4
-1/8*x = -1/4 // : -1/8
x = -1/4/(-1/8)
x = 2
x = 2
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