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n in (-oo:+oo)
1.7 = n/2.3 // - n/2.3
1.7-(n/2.3) = 0
1.7-0.43478261*n = 0
1.7-0.43478261*n = 0 // - 1.7
-0.43478261*n = -1.7 // : -0.43478261
n = -1.7/(-0.43478261)
n = 3.90999999
n = 3.90999999
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