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x in (-oo:+oo)
(x+4)/2-((2*x-11)/5) = 4 // - 4
(x+4)/2-((2*x-11)/5)-4 = 0
(x+4)/2+(-1*(2*x-11))/5-4 = 0
(5*(x+4))/(2*5)+(-1*2*(2*x-11))/(2*5)+(-4*2*5)/(2*5) = 0
5*(x+4)-1*2*(2*x-11)-4*2*5 = 0
x-40+42 = 0
x+2 = 0
(x+2)/(2*5) = 0
(x+2)/(2*5) = 0 // * 2*5
x+2 = 0
x+2 = 0 // - 2
x = -2
x = -2
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