7r-1=15r-15

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Solution for 7r-1=15r-15 equation: 



7r-1=15r-15

We move all terms to the left:

7r-1-(15r-15)=0

We get rid of parentheses

7r-15r+15-1=0

We add all the numbers together, and all the variables

-8r+14=0

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

-8r=-14

r=-14/-8

r=1+3/4

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