3+3(3+r)=12+3r

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Solution for 3+3(3+r)=12+3r equation: 



3+3(3+r)=12+3r

We move all terms to the left:

3+3(3+r)-(12+3r)=0

We add all the numbers together, and all the variables

3(r+3)-(3r+12)+3=0

We multiply parentheses

3r-(3r+12)+9+3=0

We get rid of parentheses

3r-3r-12+9+3=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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