3+r=6r-18

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Solution for 3+r=6r-18 equation: 



3+r=6r-18

We move all terms to the left:

3+r-(6r-18)=0

We get rid of parentheses

r-6r+18+3=0

We add all the numbers together, and all the variables

-5r+21=0

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

-5r=-21

r=-21/-5

r=4+1/5

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