3(3r-9)+9=18

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Solution for 3(3r-9)+9=18 equation: 



3(3r-9)+9=18

We move all terms to the left:

3(3r-9)+9-(18)=0

We add all the numbers together, and all the variables

3(3r-9)-9=0

We multiply parentheses

9r-27-9=0

We add all the numbers together, and all the variables

9r-36=0

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

9r=36

r=36/9

r=4

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