u+17=3u-9

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Solution for u+17=3u-9 equation: 



u+17=3u-9

We move all terms to the left:

u+17-(3u-9)=0

We get rid of parentheses

u-3u+9+17=0

We add all the numbers together, and all the variables

-2u+26=0

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

-2u=-26

u=-26/-2

u=+13

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