16r+18=r+12r-18

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Solution for 16r+18=r+12r-18 equation: 



16r+18=r+12r-18

We move all terms to the left:

16r+18-(r+12r-18)=0

We add all the numbers together, and all the variables

16r-(13r-18)+18=0

We get rid of parentheses

16r-13r+18+18=0

We add all the numbers together, and all the variables

3r+36=0

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

3r=-36

r=-36/3

r=-12

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