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x in (-oo:+oo)
-0.5 = x-(65.9/7.6) // - x-(65.9/7.6)
65.9/7.6-x-0.5 = 0
8.17105263-x = 0 // - 8.17105263
-x = -8.17105263 // * -1
x = 8.17105263
x = 8.17105263
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