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181=-u+293
We move all terms to the left:
181-(-u+293)=0
We add all the numbers together, and all the variables
-(-1u+293)+181=0
We get rid of parentheses
1u-293+181=0
We add all the numbers together, and all the variables
u-112=0
We move all terms containing u to the left, all other terms to the right
u=112
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