7/w-3/w=12

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Solution for 7/w-3/w=12 equation: 


D( w )

w = 0

w = 0

w = 0

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

7/w-(3/w) = 12 // - 12

7/w-(3/w)-12 = 0

7/w-3*w^-1-12 = 0

4*w^-1 = 12 // : 4

w^-1 = 3

-1 < 0

1/(w^1) = 3 // * w^1

1 = 3*w^1 // : 3

1/3 = w^1

w = 1/3

w = 1/3

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