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269=47-u
We move all terms to the left:
269-(47-u)=0
We add all the numbers together, and all the variables
-(-1u+47)+269=0
We get rid of parentheses
1u-47+269=0
We add all the numbers together, and all the variables
u+222=0
We move all terms containing u to the left, all other terms to the right
u=-222
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