3u+15=6u-15

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Solution for 3u+15=6u-15 equation: 



3u+15=6u-15

We move all terms to the left:

3u+15-(6u-15)=0

We get rid of parentheses

3u-6u+15+15=0

We add all the numbers together, and all the variables

-3u+30=0

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

-3u=-30

u=-30/-3

u=+10

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