-9=12x+3

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Solution for -9=12x+3 equation: 



-9=12x+3

We move all terms to the left:

-9-(12x+3)=0

We get rid of parentheses

-12x-3-9=0

We add all the numbers together, and all the variables

-12x-12=0

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

-12x=12

x=12/-12

x=-1

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