9(u-1)=7u+9

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Solution for 9(u-1)=7u+9 equation: 



9(u-1)=7u+9

We move all terms to the left:

9(u-1)-(7u+9)=0

We multiply parentheses

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

We get rid of parentheses

9u-7u-9-9=0

We add all the numbers together, and all the variables

2u-18=0

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

2u=18

u=18/2

u=9

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