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25.84=13.9+x
We move all terms to the left:
25.84-(13.9+x)=0
We add all the numbers together, and all the variables
-(x+13.9)+25.84=0
We get rid of parentheses
-x-13.9+25.84=0
We add all the numbers together, and all the variables
-1x+11.94=0
We move all terms containing x to the left, all other terms to the right
-x=-11.94
x=-11.94/-1
x=11+0.94/1
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