-9u+8=-8-7u

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Solution for -9u+8=-8-7u equation: 



-9u+8=-8-7u

We move all terms to the left:

-9u+8-(-8-7u)=0

We add all the numbers together, and all the variables

-9u-(-7u-8)+8=0

We get rid of parentheses

-9u+7u+8+8=0

We add all the numbers together, and all the variables

-2u+16=0

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

-2u=-16

u=-16/-2

u=+8

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