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u/7+13.1=4.4
We move all terms to the left:
u/7+13.1-(4.4)=0
We add all the numbers together, and all the variables
u/7+8.7=0
We multiply all the terms by the denominator
u+(8.7)*7=0
We add all the numbers together, and all the variables
u+60.9=0
We move all terms containing u to the left, all other terms to the right
u=-60.9
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