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86=-u+272
We move all terms to the left:
86-(-u+272)=0
We add all the numbers together, and all the variables
-(-1u+272)+86=0
We get rid of parentheses
1u-272+86=0
We add all the numbers together, and all the variables
u-186=0
We move all terms containing u to the left, all other terms to the right
u=186
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