126=-6(-1+3a)-6a

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Solution for 126=-6(-1+3a)-6a equation: 



126=-6(-1+3a)-6a

We move all terms to the left:

126-(-6(-1+3a)-6a)=0

We add all the numbers together, and all the variables

-(-6(3a-1)-6a)+126=0



We calculate terms in parentheses: -(-6(3a-1)-6a), so:

-6(3a-1)-6a

We add all the numbers together, and all the variables

-6a-6(3a-1)

We multiply parentheses

-6a-18a+6

We add all the numbers together, and all the variables

-24a+6

Back to the equation:

-(-24a+6)



We get rid of parentheses

24a-6+126=0

We add all the numbers together, and all the variables

24a+120=0

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

24a=-120

a=-120/24

a=-5

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