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50=2+6u
We move all terms to the left:
50-(2+6u)=0
We add all the numbers together, and all the variables
-(6u+2)+50=0
We get rid of parentheses
-6u-2+50=0
We add all the numbers together, and all the variables
-6u+48=0
We move all terms containing u to the left, all other terms to the right
-6u=-48
u=-48/-6
u=+8
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