r-397=-29r-7

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Solution for r-397=-29r-7 equation: 



r-397=-29r-7

We move all terms to the left:

r-397-(-29r-7)=0

We get rid of parentheses

r+29r+7-397=0

We add all the numbers together, and all the variables

30r-390=0

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

30r=390

r=390/30

r=13

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