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2.2+u/3=5.3
We move all terms to the left:
2.2+u/3-(5.3)=0
We add all the numbers together, and all the variables
u/3-3.1=0
We multiply all the terms by the denominator
u-(3.1)*3=0
We add all the numbers together, and all the variables
u-9.3=0
We move all terms containing u to the left, all other terms to the right
u=9.3
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