12+2x=13-x

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Solution for 12+2x=13-x equation: 



12+2x=13-x

We move all terms to the left:

12+2x-(13-x)=0

We add all the numbers together, and all the variables

2x-(-1x+13)+12=0

We get rid of parentheses

2x+1x-13+12=0

We add all the numbers together, and all the variables

3x-1=0

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

3x=1

x=1/3

x=1/3

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