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

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



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

We move all terms to the left:

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

We multiply parentheses

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-2u-8=0

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

-2u=8

u=8/-2

u=-4

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