4r+9=-5r-9

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



4r+9=-5r-9

We move all terms to the left:

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

We get rid of parentheses

4r+5r+9+9=0

We add all the numbers together, and all the variables

9r+18=0

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

9r=-18

r=-18/9

r=-2

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