1=2-u

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Solution for 1=2-u equation: 



1=2-u

We move all terms to the left:

1-(2-u)=0

We add all the numbers together, and all the variables

-(-1u+2)+1=0

We get rid of parentheses

1u-2+1=0

We add all the numbers together, and all the variables

u-1=0

We move all terms containing u to the left, all other terms to the right

u=1

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