12r-6=-42

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Solution for 12r-6=-42 equation: 



12r-6=-42

We move all terms to the left:

12r-6-(-42)=0

We add all the numbers together, and all the variables

12r+36=0

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

12r=-36

r=-36/12

r=-3

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