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x in (-oo:+oo)
2*x+8/9 = 178/99 // - 178/99
2*x+8/9-(178/99) = 0
2*x+8/9-178/99 = 0
2*x-10/11 = 0 // + 10/11
2*x = 10/11 // : 2
x = 10/11/2
x = 5/11
x = 5/11
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