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u/7=11.2
We move all terms to the left:
u/7-(11.2)=0
We add all the numbers together, and all the variables
u/7-11.2=0
We multiply all the terms by the denominator
u-(11.2)*7=0
We add all the numbers together, and all the variables
u-78.4=0
We move all terms containing u to the left, all other terms to the right
u=78.4
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