-(1-13r)=25

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Solution for -(1-13r)=25 equation: 



-(1-13r)=25

We move all terms to the left:

-(1-13r)-(25)=0

We add all the numbers together, and all the variables

-(-13r+1)-25=0

We get rid of parentheses

13r-1-25=0

We add all the numbers together, and all the variables

13r-26=0

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

13r=26

r=26/13

r=2

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