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z in (-oo:+oo)
z/11 = 82.4 // - 82.4
z/11-82.4 = 0
1/11*z-82.4 = 0 // + 82.4
1/11*z = 82.4 // : 1/11
z = 82.4/1/11
z = 906.40000906
z = 906.40000906
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