4.12=2r-3.8

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Solution for 4.12=2r-3.8 equation: 



4.12=2r-3.8

We move all terms to the left:

4.12-(2r-3.8)=0

We get rid of parentheses

-2r+3.8+4.12=0

We add all the numbers together, and all the variables

-2r+7.92=0

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

-2r=-7.92

r=-7.92/-2

r=3+1/1.0416666666667

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