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x in (-oo:+oo)
14 = 2*x-(1/4) // - 2*x-(1/4)
1/4-(2*x)+14 = 0
1/4-2*x+14 = 0
57/4-2*x = 0 // - 57/4
-2*x = -57/4 // : -2
x = -57/4/(-2)
x = 57/8
x = 57/8
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