12-10r-2=-42

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Solution for 12-10r-2=-42 equation: 



12-10r-2=-42

We move all terms to the left:

12-10r-2-(-42)=0

We add all the numbers together, and all the variables

-10r+52=0

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

-10r=-52

r=-52/-10

r=5+1/5

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