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n in (-oo:+oo)
(-3/4)*n+2*n = (1/2)*n-(11/3) // - (1/2)*n-(11/3)
(-3/4)*n+2*n-((1/2)*n)+11/3 = 0
(-3/4)*n+2*n+(-1/2)*n+11/3 = 0
3/4*n+11/3 = 0 // - 11/3
3/4*n = -11/3 // : 3/4
n = -11/3/3/4
n = -44/9
n = -44/9
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