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n in (-oo:+oo)
(1/4)*(n+6) = 1/4-(3/2) // - 1/4-(3/2)
(1/4)*(n+6)-(1/4)+3/2 = 0
(1/4)*(n+6)-1/4+3/2 = 0
1/4*(n+6)-1/4+3/2 = 0
(1/4*2*4*(n+6))/(2*4)+(-1*2)/(2*4)+(3*4)/(2*4) = 0
1/4*2*4*(n+6)-1*2+3*4 = 0
2*n+10+12 = 0
2*n+22 = 0
(2*n+22)/(2*4) = 0
(2*n+22)/(2*4) = 0 // * 2*4
2*n+22 = 0
2*n+22 = 0 // - 22
2*n = -22 // : 2
n = -22/2
n = -11
n = -11
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