4x+9=9-12x

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Solution for 4x+9=9-12x equation: 



4x+9=9-12x

We move all terms to the left:

4x+9-(9-12x)=0

We add all the numbers together, and all the variables

4x-(-12x+9)+9=0

We get rid of parentheses

4x+12x-9+9=0

We add all the numbers together, and all the variables

16x=0

x=0/16

x=0

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