U=-2-4a

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Solution for U=-2-4a equation: 



=-2-4U

We move all terms to the left:

-(-2-4U)=0

We add all the numbers together, and all the variables

-(-4U-2)=0

We get rid of parentheses

4U+2=0

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

4U=-2

U=-2/4

U=-1/2

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