13=-8r-5

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Solution for 13=-8r-5 equation: 



13=-8r-5

We move all terms to the left:

13-(-8r-5)=0

We get rid of parentheses

8r+5+13=0

We add all the numbers together, and all the variables

8r+18=0

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

8r=-18

r=-18/8

r=-2+1/4

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