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n in (-oo:+oo)
6*(10-(6*n)) = 492 // - 492
6*(10-(6*n))-492 = 0
6*(10-6*n)-492 = 0
6*(10-6*n)-492 = 0
-36*n-432 = 0
-36*n-432 = 0
-36*n-432 = 0 // + 432
-36*n = 432 // : -36
n = 432/(-36)
n = -12
n = -12
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