355+9r=229+12r

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Solution for 355+9r=229+12r equation: 



355+9r=229+12r

We move all terms to the left:

355+9r-(229+12r)=0

We add all the numbers together, and all the variables

9r-(12r+229)+355=0

We get rid of parentheses

9r-12r-229+355=0

We add all the numbers together, and all the variables

-3r+126=0

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

-3r=-126

r=-126/-3

r=+42

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