-28=7(x+-7)

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Solution for -28=7(x+-7) equation: 



-28=7(x+-7)

We move all terms to the left:

-28-(7(x+-7))=0

We add all the numbers together, and all the variables

-(7(x-7))-28=0



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

7(x-7)

We multiply parentheses

7x-49

Back to the equation:

-(7x-49)



We get rid of parentheses

-7x+49-28=0

We add all the numbers together, and all the variables

-7x+21=0

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

-7x=-21

x=-21/-7

x=+3

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