3x-1=9x+12

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Solution for 3x-1=9x+12 equation: 



3x-1=9x+12

We move all terms to the left:

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

We get rid of parentheses

3x-9x-12-1=0

We add all the numbers together, and all the variables

-6x-13=0

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

-6x=13

x=13/-6

x=-2+1/6

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