3=u/3-7

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Solution for 3=u/3-7 equation: 



3=u/3-7

We move all terms to the left:

3-(u/3-7)=0

We get rid of parentheses

-u/3+7+3=0

We multiply all the terms by the denominator


-u+7*3+3*3=0

We add all the numbers together, and all the variables

-1u+30=0

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

-u=-30

u=-30/-1

u=+30

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