12-4x=9-x

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



12-4x=9-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

-4x-(-1x+9)+12=0

We get rid of parentheses

-4x+1x-9+12=0

We add all the numbers together, and all the variables

-3x+3=0

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

-3x=-3

x=-3/-3

x=1

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