-5.1r+12.9r-12.07=8.94+8.9r

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Solution for -5.1r+12.9r-12.07=8.94+8.9r equation: 



-5.1r+12.9r-12.07=8.94+8.9r

We move all terms to the left:

-5.1r+12.9r-12.07-(8.94+8.9r)=0

We add all the numbers together, and all the variables

-5.1r+12.9r-(8.9r+8.94)-12.07=0

We add all the numbers together, and all the variables

7.8r-(8.9r+8.94)-12.07=0

We get rid of parentheses

7.8r-8.9r-8.94-12.07=0

We add all the numbers together, and all the variables

-1.1r-21.01=0

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

-1.1r=21.01

r=21.01/-1.1

r=-19+0.11/1.1

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