W(9)=-7w(-7)=9

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Solution for W(9)=-7w(-7)=9 equation: 



(9)=-7W(-7)=9

We move all terms to the left:

(9)-(-7W(-7))=0



We calculate terms in parentheses: -(-7W(-7)), so:

-7W(-7)

We multiply parentheses

49W

Back to the equation:

-(49W)



We move all terms containing W to the left, all other terms to the right

-49W=-9

W=-9/-49

W=9/49

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