12r=15r+7

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Solution for 12r=15r+7 equation: 



12r=15r+7

We move all terms to the left:

12r-(15r+7)=0

We get rid of parentheses

12r-15r-7=0

We add all the numbers together, and all the variables

-3r-7=0

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

-3r=7

r=7/-3

r=-2+1/3

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