-12-4r=8

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Solution for -12-4r=8 equation: 



-12-4r=8

We move all terms to the left:

-12-4r-(8)=0

We add all the numbers together, and all the variables

-4r-20=0

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

-4r=20

r=20/-4

r=-5

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