12-2x=9-1x

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Solution for 12-2x=9-1x equation: 



12-2x=9-1x

We move all terms to the left:

12-2x-(9-1x)=0

We add all the numbers together, and all the variables

-2x-(-1x+9)+12=0

We get rid of parentheses

-2x+1x-9+12=0

We add all the numbers together, and all the variables

-1x+3=0

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

-x=-3

x=-3/-1

x=+3

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