(r+4)/12=3

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Solution for (r+4)/12=3 equation: 



(r+4)/12=3

We move all terms to the left:

(r+4)/12-(3)=0

We multiply all the terms by the denominator


(r+4)-3*12=0

We add all the numbers together, and all the variables

(r+4)-36=0

We get rid of parentheses

r+4-36=0

We add all the numbers together, and all the variables

r-32=0

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

r=32

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