9u-15=-8(u+4)

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Solution for 9u-15=-8(u+4) equation: 



9u-15=-8(u+4)

We move all terms to the left:

9u-15-(-8(u+4))=0



We calculate terms in parentheses: -(-8(u+4)), so:

-8(u+4)

We multiply parentheses

-8u-32

Back to the equation:

-(-8u-32)



We get rid of parentheses

9u+8u+32-15=0

We add all the numbers together, and all the variables

17u+17=0

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

17u=-17

u=-17/17

u=-1

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