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4*l+(2*m)/6 = (4*n)/3-8*l // - (4*n)/3-8*l
4*l-(-8*l)+(2*m)/6-((4*n)/3) = 0
4*l+8*l+(2*m)/6+(-4/3)*n = 0
12*l+1/3*m-4/3*n = 0
x naleu017Cy do R
x in (-oo:+oo)
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