3=5-u

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Solution for 3=5-u equation: 



3=5-u

We move all terms to the left:

3-(5-u)=0

We add all the numbers together, and all the variables

-(-1u+5)+3=0

We get rid of parentheses

1u-5+3=0

We add all the numbers together, and all the variables

u-2=0

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

u=2

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