-28=-7(7+q)

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



-28=-7(7+q)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

-7(q+7)

We multiply parentheses

-7q-49

Back to the equation:

-(-7q-49)



We get rid of parentheses

7q+49-28=0

We add all the numbers together, and all the variables

7q+21=0

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

7q=-21

q=-21/7

q=-3

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