7/9=8/v

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Solution for 7/9=8/v equation: 


D( v )

v = 0

v = 0

v = 0

v in (-oo:0) U (0:+oo)

7/9 = 8/v // - 8/v

7/9-(8/v) = 0

7/9-8*v^-1 = 0

-8*v^-1 = -7/9 // : -8

v^-1 = 7/72

-1 < 0

1/(v^1) = 7/72 // * v^1

1 = 7/72*v^1 // : 7/72

72/7 = v^1

v = 72/7

v = 72/7

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