7(u+4)=8-(-7u-20)

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Solution for 7(u+4)=8-(-7u-20) equation: 



7(u+4)=8-(-7u-20)

We move all terms to the left:

7(u+4)-(8-(-7u-20))=0

We multiply parentheses

7u-(8-(-7u-20))+28=0



We calculate terms in parentheses: -(8-(-7u-20)), so:

8-(-7u-20)

determiningTheFunctionDomain
-(-7u-20)+8

We get rid of parentheses

7u+20+8

We add all the numbers together, and all the variables

7u+28

Back to the equation:

-(7u+28)



We get rid of parentheses

7u-7u-28+28=0

We add all the numbers together, and all the variables

=0

u=0/1

u=0

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