-3(x+8)-x=12

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Solution for -3(x+8)-x=12 equation: 



-3(x+8)-x=12

We move all terms to the left:

-3(x+8)-x-(12)=0

We add all the numbers together, and all the variables

-1x-3(x+8)-12=0

We multiply parentheses

-1x-3x-24-12=0

We add all the numbers together, and all the variables

-4x-36=0

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

-4x=36

x=36/-4

x=-9

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