28-4x=-7(x-7)

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Solution for 28-4x=-7(x-7) equation: 



28-4x=-7(x-7)

We move all terms to the left:

28-4x-(-7(x-7))=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

-4x+7x-49+28=0

We add all the numbers together, and all the variables

3x-21=0

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

3x=21

x=21/3

x=7

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