8=3u+-1

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Solution for 8=3u+-1 equation: 



8=3u+-1

We move all terms to the left:

8-(3u+-1)=0

We add all the numbers together, and all the variables

-(3u-1)+8=0

We get rid of parentheses

-3u+1+8=0

We add all the numbers together, and all the variables

-3u+9=0

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

-3u=-9

u=-9/-3

u=+3

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