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18.1=-1.1+6u
We move all terms to the left:
18.1-(-1.1+6u)=0
We add all the numbers together, and all the variables
-(6u-1.1)+18.1=0
We get rid of parentheses
-6u+1.1+18.1=0
We add all the numbers together, and all the variables
-6u+19.2=0
We move all terms containing u to the left, all other terms to the right
-6u=-19.2
u=-19.2/-6
u=3+1/5
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