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u/6+8.1=11.1
We move all terms to the left:
u/6+8.1-(11.1)=0
We add all the numbers together, and all the variables
u/6-3=0
We multiply all the terms by the denominator
u-3*6=0
We add all the numbers together, and all the variables
u-18=0
We move all terms containing u to the left, all other terms to the right
u=18
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