9r+3=2(2r+9)

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Solution for 9r+3=2(2r+9) equation: 



9r+3=2(2r+9)

We move all terms to the left:

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



We calculate terms in parentheses: -(2(2r+9)), so:

2(2r+9)

We multiply parentheses

4r+18

Back to the equation:

-(4r+18)



We get rid of parentheses

9r-4r-18+3=0

We add all the numbers together, and all the variables

5r-15=0

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

5r=15

r=15/5

r=3

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