7x-7=2(3x+7)

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Solution for 7x-7=2(3x+7) equation: 



7x-7=2(3x+7)

We move all terms to the left:

7x-7-(2(3x+7))=0



We calculate terms in parentheses: -(2(3x+7)), so:

2(3x+7)

We multiply parentheses

6x+14

Back to the equation:

-(6x+14)



We get rid of parentheses

7x-6x-14-7=0

We add all the numbers together, and all the variables

x-21=0

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

x=21

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