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n in (-oo:+oo)
6*(5-(4*n)) = 102 // - 102
6*(5-(4*n))-102 = 0
6*(5-4*n)-102 = 0
6*(5-4*n)-102 = 0
-24*n-72 = 0
-24*n-72 = 0
-24*n-72 = 0 // + 72
-24*n = 72 // : -24
n = 72/(-24)
n = -3
n = -3
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