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2=-8+5u
We move all terms to the left:
2-(-8+5u)=0
We add all the numbers together, and all the variables
-(5u-8)+2=0
We get rid of parentheses
-5u+8+2=0
We add all the numbers together, and all the variables
-5u+10=0
We move all terms containing u to the left, all other terms to the right
-5u=-10
u=-10/-5
u=+2
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