9(u+7)=90

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Solution for 9(u+7)=90 equation: 



9(u+7)=90

We move all terms to the left:

9(u+7)-(90)=0

We multiply parentheses

9u+63-90=0

We add all the numbers together, and all the variables

9u-27=0

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

9u=27

u=27/9

u=3

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