9u+4=85

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Solution for 9u+4=85 equation: 



9u+4=85

We move all terms to the left:

9u+4-(85)=0

We add all the numbers together, and all the variables

9u-81=0

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

9u=81

u=81/9

u=9

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