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-6-5u=3.75
We move all terms to the left:
-6-5u-(3.75)=0
We add all the numbers together, and all the variables
-5u-9.75=0
We move all terms containing u to the left, all other terms to the right
-5u=9.75
u=9.75/-5
u=-1+2.7142857142857/2.8571428571429
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