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n in (-oo:+oo)
(9/2)*(8*n+8)+(-5/3)*n = -(n-4) // + n-4
(9/2)*(8*n+8)+(-5/3)*n+n-4 = 0
9/2*(8*n+8)+(-5*n)/3+n-4 = 0
(3*9/2*(8*n+8))/3+(-5*n)/3+(3*n)/3+(-4*3)/3 = 0
3*9/2*(8*n+8)-5*n+3*n-4*3 = 0
103*n+3*n-12+108 = 0
106*n-12+108 = 0
106*n+96 = 0
(106*n+96)/3 = 0
(106*n+96)/3 = 0 // * 3
106*n+96 = 0
106*n+96 = 0 // - 96
106*n = -96 // : 106
n = -96/106
n = -48/53
n = -48/53
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