9=u/4-12

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Solution for 9=u/4-12 equation: 



9=u/4-12

We move all terms to the left:

9-(u/4-12)=0

We get rid of parentheses

-u/4+12+9=0

We multiply all the terms by the denominator


-u+12*4+9*4=0

We add all the numbers together, and all the variables

-1u+84=0

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

-u=-84

u=-84/-1

u=+84

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