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-2.2+u/7=13.4
We move all terms to the left:
-2.2+u/7-(13.4)=0
We add all the numbers together, and all the variables
u/7-15.6=0
We multiply all the terms by the denominator
u-(15.6)*7=0
We add all the numbers together, and all the variables
u-109.2=0
We move all terms containing u to the left, all other terms to the right
u=109.2
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