9(-u-1)=-9u-9

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



9(-u-1)=-9u-9

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-9u-(-9u-9)-9=0

We get rid of parentheses

-9u+9u+9-9=0

We add all the numbers together, and all the variables

=0

u=0/1

u=0

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