-6x-9=6x+9

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Solution for -6x-9=6x+9 equation: 



-6x-9=6x+9

We move all terms to the left:

-6x-9-(6x+9)=0

We get rid of parentheses

-6x-6x-9-9=0

We add all the numbers together, and all the variables

-12x-18=0

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

-12x=18

x=18/-12

x=-1+1/2

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