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X in (-oo:+oo)
4/9 = X/54 // - X/54
4/9-(X/54) = 0
4/9-1/54*X = 0 // - 4/9
-1/54*X = -4/9 // : -1/54
X = -4/9/(-1/54)
X = 24
X = 24
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