3r+18=-6r

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



3r+18=-6r

We move all terms to the left:

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

We get rid of parentheses

3r+6r+18=0

We add all the numbers together, and all the variables

9r+18=0

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

9r=-18

r=-18/9

r=-2

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