3r+2=12

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Solution for 3r+2=12 equation: 



3r+2=12

We move all terms to the left:

3r+2-(12)=0

We add all the numbers together, and all the variables

3r-10=0

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

3r=10

r=10/3

r=3+1/3

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