2x+9=12x-x

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Solution for 2x+9=12x-x equation: 



2x+9=12x-x

We move all terms to the left:

2x+9-(12x-x)=0

We add all the numbers together, and all the variables

2x-(+11x)+9=0

We get rid of parentheses

2x-11x+9=0

We add all the numbers together, and all the variables

-9x+9=0

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

-9x=-9

x=-9/-9

x=1

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