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n in (-oo:+oo)
(1/4)*(n+5) = 16 // - 16
(1/4)*(n+5)-16 = 0
1/4*(n+5)-16 = 0
1/4*(n+5)-16 = 0
1/4*n-59/4 = 0
1/4*n-59/4 = 0
1/4*n-59/4 = 0 // + 59/4
1/4*n = 59/4 // : 1/4
n = 59/4/1/4
n = 59
n = 59
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