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x in (-oo:+oo)
(2*x+4)/4+x+2*x+1+4 = 27 // - 27
(2*x+4)/4+x+2*x-27+1+4 = 0
(2*x+4)/4+(4*x)/4+(2*4*x)/4+(-27*4)/4+(1*4)/4+(4^2)/4 = 0
2*x+4*x+2*4*x-27*4+1*4+4+16 = 0
6*x+8*x-108+4+4+16 = 0
14*x-108+4+4+16 = 0
14*x-104+4+16 = 0
14*x-100+16 = 0
14*x-84 = 0
(14*x-84)/4 = 0
(14*x-84)/4 = 0 // * 4
14*x-84 = 0
14*x-84 = 0 // + 84
14*x = 84 // : 14
x = 84/14
x = 6
x = 6
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