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X in (-oo:+oo)
X-(9.8/(-9.3)) = 7.7 // - 7.7
X-(9.8/(-9.3))-7.7 = 0
X-7.7+1.05376344 = 0
X-6.64623656 = 0 // + 6.64623656
X = 6.64623656
X = 6.64623656
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