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n in (-oo:+oo)
-4*n-(8/17) = 23 // - 23
-4*n-(8/17)-23 = 0
-4*n-8/17-23 = 0
-4*n-399/17 = 0 // + 399/17
-4*n = 399/17 // : -4
n = 399/17/(-4)
n = -399/68
n = -399/68
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