19r+18=135-20r

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Solution for 19r+18=135-20r equation: 



19r+18=135-20r

We move all terms to the left:

19r+18-(135-20r)=0

We add all the numbers together, and all the variables

19r-(-20r+135)+18=0

We get rid of parentheses

19r+20r-135+18=0

We add all the numbers together, and all the variables

39r-117=0

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

39r=117

r=117/39

r=3

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