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x in (-oo:+oo)
x-2.71428571 = 2/3 // - 2/3
x-(2/3)-2.71428571 = 0
x-2/3-2.71428571 = 0
x-3.38095238 = 0 // + 3.38095238
x = 3.38095238
x = 3.38095238
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