3+9r^=12

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Solution for 3+9r^=12 equation: 



3+9r^=12

We move all terms to the left:

3+9r^-(12)=0

We add all the numbers together, and all the variables

9r-9=0

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

9r=9

r=9/9

r=1

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