9+9x=12x

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Solution for 9+9x=12x equation: 



9+9x=12x

We move all terms to the left:

9+9x-(12x)=0

We add all the numbers together, and all the variables

-3x+9=0

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

-3x=-9

x=-9/-3

x=+3

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