-3x+9=12,

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



-3x+9=12.

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3x+9-12=0

We add all the numbers together, and all the variables

-3x-3=0

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

-3x=3

x=3/-3

x=-1

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