6+8r=5r-9

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Solution for 6+8r=5r-9 equation: 



6+8r=5r-9

We move all terms to the left:

6+8r-(5r-9)=0

We get rid of parentheses

8r-5r+9+6=0

We add all the numbers together, and all the variables

3r+15=0

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

3r=-15

r=-15/3

r=-5

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