5r-15=12r-30

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Solution for 5r-15=12r-30 equation: 



5r-15=12r-30

We move all terms to the left:

5r-15-(12r-30)=0

We get rid of parentheses

5r-12r+30-15=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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