12-(-x)=31

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Solution for 12-(-x)=31 equation: 



12-(-x)=31

We move all terms to the left:

12-(-x)-(31)=0

We add all the numbers together, and all the variables

-(-1x)+12-31=0

We add all the numbers together, and all the variables

-(-1x)-19=0

We get rid of parentheses

1x-19=0

We add all the numbers together, and all the variables

x-19=0

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

x=19

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