4r-9=r+6

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Solution for 4r-9=r+6 equation: 



4r-9=r+6

We move all terms to the left:

4r-9-(r+6)=0

We get rid of parentheses

4r-r-6-9=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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