-6(1+8x)-9=129

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Solution for -6(1+8x)-9=129 equation: 



-6(1+8x)-9=129

We move all terms to the left:

-6(1+8x)-9-(129)=0

We add all the numbers together, and all the variables

-6(8x+1)-9-129=0

We add all the numbers together, and all the variables

-6(8x+1)-138=0

We multiply parentheses

-48x-6-138=0

We add all the numbers together, and all the variables

-48x-144=0

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

-48x=144

x=144/-48

x=-3

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