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-5.75=3+u/7
We move all terms to the left:
-5.75-(3+u/7)=0
We add all the numbers together, and all the variables
-(u/7+3)-5.75=0
We get rid of parentheses
-u/7-3-5.75=0
We multiply all the terms by the denominator
-u-3*7-(5.75)*7=0
We add all the numbers together, and all the variables
-1u-61.25=0
We move all terms containing u to the left, all other terms to the right
-u=61.25
u=61.25/-1
u=-61+0.25/1
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