15=4r-6

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Solution for 15=4r-6 equation: 



15=4r-6

We move all terms to the left:

15-(4r-6)=0

We get rid of parentheses

-4r+6+15=0

We add all the numbers together, and all the variables

-4r+21=0

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

-4r=-21

r=-21/-4

r=5+1/4

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