5r-15=12r

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Solution for 5r-15=12r equation: 



5r-15=12r

We move all terms to the left:

5r-15-(12r)=0

We add all the numbers together, and all the variables

-7r-15=0

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

-7r=15

r=15/-7

r=-2+1/7

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