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X in (-oo:+oo)
1.28 = X-(40/3) // - X-(40/3)
40/3-X+1.28 = 0
14.61333333-X = 0 // - 14.61333333
-X = -14.61333333 // * -1
X = 14.61333333
X = 14.61333333
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