31.7=12.1+x

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Solution for 31.7=12.1+x equation: 



31.7=12.1+x

We move all terms to the left:

31.7-(12.1+x)=0

We add all the numbers together, and all the variables

-(x+12.1)+31.7=0

We get rid of parentheses

-x-12.1+31.7=0

We add all the numbers together, and all the variables

-1x+19.6=0

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

-x=-19.6

x=-19.6/-1

x=19+0.6/1

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