-9=u(-7)

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Solution for -9=u(-7) equation: 



-9=u(-7)

We move all terms to the left:

-9-(u(-7))=0



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

u(-7)

We multiply parentheses

-7u

Back to the equation:

-(-7u)



We get rid of parentheses

7u-9=0

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

7u=9

u=9/7

u=1+2/7

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