12r+5-4r+8=12

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Solution for 12r+5-4r+8=12 equation: 



12r+5-4r+8=12

We move all terms to the left:

12r+5-4r+8-(12)=0

We add all the numbers together, and all the variables

8r+1=0

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

8r=-1

r=-1/8

r=-1/8

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