3x-9=x-12

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



3x-9=x-12

We move all terms to the left:

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

We get rid of parentheses

3x-x+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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