9-x=12-3x

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Solution for 9-x=12-3x equation: 



9-x=12-3x

We move all terms to the left:

9-x-(12-3x)=0

We add all the numbers together, and all the variables

-x-(-3x+12)+9=0

We add all the numbers together, and all the variables

-1x-(-3x+12)+9=0

We get rid of parentheses

-1x+3x-12+9=0

We add all the numbers together, and all the variables

2x-3=0

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

2x=3

x=3/2

x=1+1/2

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