12-1.8r=1

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Solution for 12-1.8r=1 equation: 



12-1.8r=1

We move all terms to the left:

12-1.8r-(1)=0

We add all the numbers together, and all the variables

-1.8r+11=0

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

-1.8r=-11

r=-11/-1.8

r=6+0.2/1.8

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