-84=16u+9u+9

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Solution for -84=16u+9u+9 equation: 



-84=16u+9u+9

We move all terms to the left:

-84-(16u+9u+9)=0

We add all the numbers together, and all the variables

-(25u+9)-84=0

We get rid of parentheses

-25u-9-84=0

We add all the numbers together, and all the variables

-25u-93=0

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

-25u=93

u=93/-25

u=-3+18/25

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