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-2=6+2u
We move all terms to the left:
-2-(6+2u)=0
We add all the numbers together, and all the variables
-(2u+6)-2=0
We get rid of parentheses
-2u-6-2=0
We add all the numbers together, and all the variables
-2u-8=0
We move all terms containing u to the left, all other terms to the right
-2u=8
u=8/-2
u=-4
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