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

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



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

We move all terms to the left:

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



We calculate terms in parentheses: -(-8(u+9)), so:

-8(u+9)

We multiply parentheses

-8u-72

Back to the equation:

-(-8u-72)



We get rid of parentheses

9u+8u+72-4=0

We add all the numbers together, and all the variables

17u+68=0

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

17u=-68

u=-68/17

u=-4

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