(u+15)/9=4

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Solution for (u+15)/9=4 equation: 



(u+15)/9=4

We move all terms to the left:

(u+15)/9-(4)=0

We multiply all the terms by the denominator


(u+15)-4*9=0

We add all the numbers together, and all the variables

(u+15)-36=0

We get rid of parentheses

u+15-36=0

We add all the numbers together, and all the variables

u-21=0

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

u=21

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