7/3=42/s

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Solution for 7/3=42/s equation: 


D( s )

s = 0

s = 0

s = 0

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

7/3 = 42/s // - 42/s

7/3-(42/s) = 0

7/3-42*s^-1 = 0

-42*s^-1 = -7/3 // : -42

s^-1 = 1/18

-1 < 0

1/(s^1) = 1/18 // * s^1

1 = 1/18*s^1 // : 1/18

18 = s^1

s = 18

s = 18

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