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x in (-oo:+oo)
7/11 = x/45 // - x/45
7/11-(x/45) = 0
7/11-1/45*x = 0 // - 7/11
-1/45*x = -7/11 // : -1/45
x = -7/11/(-1/45)
x = 315/11
x = 315/11
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