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n in (-oo:+oo)
-(5*n)-3 = 37-n // - 37-n
n-(5*n)-37-3 = 0
n-5*n-37-3 = 0
-4*n-40 = 0 // + 40
-4*n = 40 // : -4
n = 40/(-4)
n = -10
n = -10
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