12-(3r+5)=25

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Solution for 12-(3r+5)=25 equation: 



12-(3r+5)=25

We move all terms to the left:

12-(3r+5)-(25)=0

We add all the numbers together, and all the variables

-(3r+5)-13=0

We get rid of parentheses

-3r-5-13=0

We add all the numbers together, and all the variables

-3r-18=0

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

-3r=18

r=18/-3

r=-6

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