7(x-7)=-7x-21

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Solution for 7(x-7)=-7x-21 equation: 



7(x-7)=-7x-21

We move all terms to the left:

7(x-7)-(-7x-21)=0

We multiply parentheses

7x-(-7x-21)-49=0

We get rid of parentheses

7x+7x+21-49=0

We add all the numbers together, and all the variables

14x-28=0

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

14x=28

x=28/14

x=2

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