-9+7x=2(6+7x)

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Solution for -9+7x=2(6+7x) equation: 



-9+7x=2(6+7x)

We move all terms to the left:

-9+7x-(2(6+7x))=0

We add all the numbers together, and all the variables

7x-(2(7x+6))-9=0



We calculate terms in parentheses: -(2(7x+6)), so:

2(7x+6)

We multiply parentheses

14x+12

Back to the equation:

-(14x+12)



We get rid of parentheses

7x-14x-12-9=0

We add all the numbers together, and all the variables

-7x-21=0

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

-7x=21

x=21/-7

x=-3

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