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x in (-oo:+oo)
1.96 = x-(64/2.8) // - x-(64/2.8)
64/2.8-x+1.96 = 0
24.81714286-x = 0 // - 24.81714286
-x = -24.81714286 // * -1
x = 24.81714286
x = 24.81714286
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