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165=69-u
We move all terms to the left:
165-(69-u)=0
We add all the numbers together, and all the variables
-(-1u+69)+165=0
We get rid of parentheses
1u-69+165=0
We add all the numbers together, and all the variables
u+96=0
We move all terms containing u to the left, all other terms to the right
u=-96
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