-7-1=3(u-7)

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Solution for -7-1=3(u-7) equation: 



-7-1=3(u-7)

We move all terms to the left:

-7-1-(3(u-7))=0

We add all the numbers together, and all the variables

-(3(u-7))-8=0



We calculate terms in parentheses: -(3(u-7)), so:

3(u-7)

We multiply parentheses

3u-21

Back to the equation:

-(3u-21)



We get rid of parentheses

-3u+21-8=0

We add all the numbers together, and all the variables

-3u+13=0

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

-3u=-13

u=-13/-3

u=4+1/3

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