3+u=2u+5

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Solution for 3+u=2u+5 equation: 



3+u=2u+5

We move all terms to the left:

3+u-(2u+5)=0

We get rid of parentheses

u-2u-5+3=0

We add all the numbers together, and all the variables

-1u-2=0

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

-u=2

u=2/-1

u=-2

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