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x in (-oo:+oo)
(-9/8)*x-(9/11) = 0
(-9/8)*x-9/11 = 0
-9/8*x-9/11 = 0 // + 9/11
-9/8*x = 9/11 // : -9/8
x = 9/11/(-9/8)
x = -8/11
x = -8/11
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