4=v/7

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Solution for 4=v/7 equation: 


v in (-oo:+oo)

4 = v/7 // - v/7

4-(v/7) = 0

4-1/7*v = 0 // - 4

-1/7*v = -4 // : -1/7

v = -4/(-1/7)

v = 28

v = 28

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