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x in (-oo:+oo)
(9*x)/11+5 = 4 // - 4
(9*x)/11-4+5 = 0
9/11*x+1 = 0 // - 1
9/11*x = -1 // : 9/11
x = -1/9/11
x = -11/9
x = -11/9
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