8r+9=5r-9

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



8r+9=5r-9

We move all terms to the left:

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

We get rid of parentheses

8r-5r+9+9=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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