12x-1=-9-1x

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



12x-1=-9-1x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

12x+1x+9-1=0

We add all the numbers together, and all the variables

13x+8=0

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

13x=-8

x=-8/13

x=-8/13

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