31+67=x+12

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Solution for 31+67=x+12 equation: 



31+67=x+12

We move all terms to the left:

31+67-(x+12)=0

We add all the numbers together, and all the variables

-(x+12)+98=0

We get rid of parentheses

-x-12+98=0

We add all the numbers together, and all the variables

-1x+86=0

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

-x=-86

x=-86/-1

x=+86

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