9=3-12x

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Solution for 9=3-12x equation: 



9=3-12x

We move all terms to the left:

9-(3-12x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

12x-3+9=0

We add all the numbers together, and all the variables

12x+6=0

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

12x=-6

x=-6/12

x=-1/2

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