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79=271-u
We move all terms to the left:
79-(271-u)=0
We add all the numbers together, and all the variables
-(-1u+271)+79=0
We get rid of parentheses
1u-271+79=0
We add all the numbers together, and all the variables
u-192=0
We move all terms containing u to the left, all other terms to the right
u=192
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