165=-2x+7(4x-21)

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Solution for 165=-2x+7(4x-21) equation: 



165=-2x+7(4x-21)

We move all terms to the left:

165-(-2x+7(4x-21))=0



We calculate terms in parentheses: -(-2x+7(4x-21)), so:

-2x+7(4x-21)

We multiply parentheses

-2x+28x-147

We add all the numbers together, and all the variables

26x-147

Back to the equation:

-(26x-147)



We get rid of parentheses

-26x+147+165=0

We add all the numbers together, and all the variables

-26x+312=0

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

-26x=-312

x=-312/-26

x=+12

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