(9/(5w))=(7/9)

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Solution for (9/(5w))=(7/9) equation: 


D( w )

5*w = 0

5*w = 0

5*w = 0

5*w = 0 // : 5

w = 0

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

9/(5*w) = 7/9 // - 7/9

9/(5*w)-(7/9) = 0

9/(5*w)-7/9 = 0

9/5*w^-1 = 7/9 // : 9/5

w^-1 = 35/81

-1 < 0

1/(w^1) = 35/81 // * w^1

1 = 35/81*w^1 // : 35/81

81/35 = w^1

w = 81/35

w = 81/35

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