30=5/7v

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Solution for 30=5/7v equation: 


v in (-oo:+oo)

30 = (5/7)*v // - (5/7)*v

30-((5/7)*v) = 0

(-5/7)*v+30 = 0

30-5/7*v = 0 // - 30

-5/7*v = -30 // : -5/7

v = -30/(-5/7)

v = 42

v = 42

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