-3u+39=-6u+42

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Solution for -3u+39=-6u+42 equation: 



-3u+39=-6u+42

We move all terms to the left:

-3u+39-(-6u+42)=0

We get rid of parentheses

-3u+6u-42+39=0

We add all the numbers together, and all the variables

3u-3=0

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

3u=3

u=3/3

u=1

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