3r-9=2r+1

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Solution for 3r-9=2r+1 equation: 



3r-9=2r+1

We move all terms to the left:

3r-9-(2r+1)=0

We get rid of parentheses

3r-2r-1-9=0

We add all the numbers together, and all the variables

r-10=0

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

r=10

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