129=6x-3(-7x+12)

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Solution for 129=6x-3(-7x+12) equation: 



129=6x-3(-7x+12)

We move all terms to the left:

129-(6x-3(-7x+12))=0



We calculate terms in parentheses: -(6x-3(-7x+12)), so:

6x-3(-7x+12)

We multiply parentheses

6x+21x-36

We add all the numbers together, and all the variables

27x-36

Back to the equation:

-(27x-36)



We get rid of parentheses

-27x+36+129=0

We add all the numbers together, and all the variables

-27x+165=0

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

-27x=-165

x=-165/-27

x=6+1/9

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