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66=-u+164
We move all terms to the left:
66-(-u+164)=0
We add all the numbers together, and all the variables
-(-1u+164)+66=0
We get rid of parentheses
1u-164+66=0
We add all the numbers together, and all the variables
u-98=0
We move all terms containing u to the left, all other terms to the right
u=98
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