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28+19=-8+15u
We move all terms to the left:
28+19-(-8+15u)=0
We add all the numbers together, and all the variables
-(15u-8)+28+19=0
We add all the numbers together, and all the variables
-(15u-8)+47=0
We get rid of parentheses
-15u+8+47=0
We add all the numbers together, and all the variables
-15u+55=0
We move all terms containing u to the left, all other terms to the right
-15u=-55
u=-55/-15
u=3+2/3
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