8r-12=12r+8

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



8r-12=12r+8

We move all terms to the left:

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

We get rid of parentheses

8r-12r-8-12=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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