6-3x=12x+9

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Solution for 6-3x=12x+9 equation: 



6-3x=12x+9

We move all terms to the left:

6-3x-(12x+9)=0

We get rid of parentheses

-3x-12x-9+6=0

We add all the numbers together, and all the variables

-15x-3=0

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

-15x=3

x=3/-15

x=-1/5

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