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-8.1=11.1+u/6
We move all terms to the left:
-8.1-(11.1+u/6)=0
We add all the numbers together, and all the variables
-(u/6+11.1)-8.1=0
We get rid of parentheses
-u/6-11.1-8.1=0
We multiply all the terms by the denominator
-u-(11.1)*6-(8.1)*6=0
We add all the numbers together, and all the variables
-1u-115.2=0
We move all terms containing u to the left, all other terms to the right
-u=115.2
u=115.2/-1
u=-115+0.2/1
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