-5r+8r=-9-4r+1+1

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Solution for -5r+8r=-9-4r+1+1 equation: 



-5r+8r=-9-4r+1+1

We move all terms to the left:

-5r+8r-(-9-4r+1+1)=0

We add all the numbers together, and all the variables

-5r+8r-(-4r-7)=0

We add all the numbers together, and all the variables

3r-(-4r-7)=0

We get rid of parentheses

3r+4r+7=0

We add all the numbers together, and all the variables

7r+7=0

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

7r=-7

r=-7/7

r=-1

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