3x+9=-12+3x

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



3x+9=-12+3x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x-3x+12+9=0

We add all the numbers together, and all the variables

21!=0

There is no solution for this equation

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