-u/3=42

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Solution for -u/3=42 equation: 



-u/3=42

We move all terms to the left:

-u/3-(42)=0

We multiply all the terms by the denominator


-u-42*3=0

We add all the numbers together, and all the variables

-1u-126=0

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

-u=126

u=126/-1

u=-126

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