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n in (-oo:+oo)
(27*n)/4-1 = n/4-((1/4)*(-10*n-4)) // - n/4-((1/4)*(-10*n-4))
(1/4)*(-10*n-4)+(27*n)/4-(n/4)-1 = 0
1/4*(-10*n-4)+(27*n)/4-n/4-1 = 0
(1/4*4*(-10*n-4))/4+(27*n)/4-n/4+(-1*4)/4 = 0
1/4*4*(-10*n-4)+27*n-n-1*4 = 0
17*n-n-4-4 = 0
16*n-4-4 = 0
16*n-8 = 0
(16*n-8)/4 = 0
(16*n-8)/4 = 0 // * 4
16*n-8 = 0
16*n-8 = 0 // + 8
16*n = 8 // : 16
n = 8/16
n = 1/2
n = 1/2
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