-u+8=1+7-u

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Solution for -u+8=1+7-u equation: 



-u+8=1+7-u

We move all terms to the left:

-u+8-(1+7-u)=0

We add all the numbers together, and all the variables

-u-(-1u+8)+8=0

We add all the numbers together, and all the variables

-1u-(-1u+8)+8=0

We get rid of parentheses

-1u+1u-8+8=0

We add all the numbers together, and all the variables

=0

u=0/1

u=0

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