249=-5x-7(-7x+21)

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Solution for 249=-5x-7(-7x+21) equation: 



249=-5x-7(-7x+21)

We move all terms to the left:

249-(-5x-7(-7x+21))=0



We calculate terms in parentheses: -(-5x-7(-7x+21)), so:

-5x-7(-7x+21)

We multiply parentheses

-5x+49x-147

We add all the numbers together, and all the variables

44x-147

Back to the equation:

-(44x-147)



We get rid of parentheses

-44x+147+249=0

We add all the numbers together, and all the variables

-44x+396=0

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

-44x=-396

x=-396/-44

x=+9

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