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n in (-oo:+oo)
-9.8 = n/(-2.3) // - n/(-2.3)
-(n/(-2.3))-9.8 = 0
0.43478261*n-9.8 = 0
0.43478261*n-9.8 = 0 // + 9.8
0.43478261*n = 9.8 // : 0.43478261
n = 9.8/0.43478261
n = 22.53999993
n = 22.53999993
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