-3-x=9+3x

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Solution for -3-x=9+3x equation: 



-3-x=9+3x

We move all terms to the left:

-3-x-(9+3x)=0

We add all the numbers together, and all the variables

-x-(3x+9)-3=0

We add all the numbers together, and all the variables

-1x-(3x+9)-3=0

We get rid of parentheses

-1x-3x-9-3=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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