3r+8=-12

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Solution for 3r+8=-12 equation: 



3r+8=-12

We move all terms to the left:

3r+8-(-12)=0

We add all the numbers together, and all the variables

3r+20=0

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

3r=-20

r=-20/3

r=-6+2/3

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