18u+19=3u-20+18u

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Solution for 18u+19=3u-20+18u equation: 



18u+19=3u-20+18u

We move all terms to the left:

18u+19-(3u-20+18u)=0

We add all the numbers together, and all the variables

18u-(21u-20)+19=0

We get rid of parentheses

18u-21u+20+19=0

We add all the numbers together, and all the variables

-3u+39=0

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

-3u=-39

u=-39/-3

u=+13

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