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-4.1=u/7+18.3
We move all terms to the left:
-4.1-(u/7+18.3)=0
We get rid of parentheses
-u/7-18.3-4.1=0
We multiply all the terms by the denominator
-u-(18.3)*7-(4.1)*7=0
We add all the numbers together, and all the variables
-1u-156.8=0
We move all terms containing u to the left, all other terms to the right
-u=156.8
u=156.8/-1
u=-156+0.80000000000001/1
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