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v in (-oo:+oo)
75/8 = (11/4)*v+(7/2)*v // - (11/4)*v+(7/2)*v
75/8-((11/4)*v)-((7/2)*v) = 0
(-11/4)*v+(-7/2)*v+75/8 = 0
75/8-25/4*v = 0 // - 75/8
-25/4*v = -75/8 // : -25/4
v = -75/8/(-25/4)
v = 3/2
v = 3/2
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