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x in (-oo:+oo)
3*x+5*x+5/9 = -211/9 // + -211/9
3*x+5*x+5/9-(-211/9) = 0
3*x+5*x+5/9+211/9 = 0
8*x+24 = 0 // - 24
8*x = -24 // : 8
x = -24/8
x = -3
x = -3
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