18r-12=15r+12

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Solution for 18r-12=15r+12 equation: 



18r-12=15r+12

We move all terms to the left:

18r-12-(15r+12)=0

We get rid of parentheses

18r-15r-12-12=0

We add all the numbers together, and all the variables

3r-24=0

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

3r=24

r=24/3

r=8

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