-5(-2r-5)-r-1=12

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Solution for -5(-2r-5)-r-1=12 equation: 



-5(-2r-5)-r-1=12

We move all terms to the left:

-5(-2r-5)-r-1-(12)=0

We add all the numbers together, and all the variables

-1r-5(-2r-5)-13=0

We multiply parentheses

-1r+10r+25-13=0

We add all the numbers together, and all the variables

9r+12=0

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

9r=-12

r=-12/9

r=-1+1/3

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