6+9(r-3)=69

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Solution for 6+9(r-3)=69 equation: 



6+9(r-3)=69

We move all terms to the left:

6+9(r-3)-(69)=0

We add all the numbers together, and all the variables

9(r-3)-63=0

We multiply parentheses

9r-27-63=0

We add all the numbers together, and all the variables

9r-90=0

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

9r=90

r=90/9

r=10

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