U=-3-3a

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Solution for U=-3-3a equation: 



=-3-3U

We move all terms to the left:

-(-3-3U)=0

We add all the numbers together, and all the variables

-(-3U-3)=0

We get rid of parentheses

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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