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n in (-oo:+oo)
2*n-5 = (1/2)*(3*n-13) // - (1/2)*(3*n-13)
2*n-((1/2)*(3*n-13))-5 = 0
(-1/2)*(3*n-13)+2*n-5 = 0
2*n-1/2*(3*n-13)-5 = 0
2*n-1/2*(3*n-13)-5 = 0
1/2*n-5+13/2 = 0
1/2*n+3/2 = 0
1/2*n+3/2 = 0
1/2*n+3/2 = 0 // - 3/2
1/2*n = -3/2 // : 1/2
n = -3/2/1/2
n = -3
n = -3
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