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X/8+(11*Y)/12 = 4/X // - 4/X
X/8-(4/X)+(11*Y)/12 = 0
X/8-4*X^-1+(11*Y)/12 = 0
1/8*X-4*X^-1+11/12*Y = 0
x naleu017Cy do R
x in (-oo:+oo)
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