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X in (-oo:+oo)
(X-9)/2+X+X+X/3-9 = 243 // - 243
(X-9)/2+X+X+X/3-243-9 = 0
(3*(X-9))/(2*3)+(2*3*X)/(2*3)+(2*3*X)/(2*3)+(2*X)/(2*3)+(-243*2*3)/(2*3)+(-9*2*3)/(2*3) = 0
3*(X-9)+2*3*X+2*3*X+2*X-243*2*3-9*2*3 = 0
9*X+6*X+2*X-1458-54-27 = 0
15*X+2*X-1458-54-27 = 0
17*X-1458-54-27 = 0
17*X-1485-54 = 0
17*X-1539 = 0
(17*X-1539)/(2*3) = 0
(17*X-1539)/(2*3) = 0 // * 2*3
17*X-1539 = 0
17*X-1539 = 0 // + 1539
17*X = 1539 // : 17
X = 1539/17
X = 1539/17
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