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V in (-oo:+oo)
V/14 = 27/126 // - 27/126
V/14-(27/126) = 0
V/14-3/14 = 0
1/14*V-3/14 = 0 // + 3/14
1/14*V = 3/14 // : 1/14
V = 3/14/1/14
V = 3
V = 3
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