U-3+5x=42

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Solution for U-3+5x=42 equation: 



-3+5U=42

We move all terms to the left:

-3+5U-(42)=0

We add all the numbers together, and all the variables

5U-45=0

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

5U=45

U=45/5

U=9

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