3/w=18/42

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Solution for 3/w=18/42 equation: 


D( w )

w = 0

w = 0

w = 0

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

3/w = 18/42 // - 18/42

3/w-(18/42) = 0

3/w-3/7 = 0

3*w^-1 = 3/7 // : 3

w^-1 = 1/7

-1 < 0

1/(w^1) = 1/7 // * w^1

1 = 1/7*w^1 // : 1/7

7 = w^1

w = 7

w = 7

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