7.5r-19.95=18.72+15.33+11.1r

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Solution for 7.5r-19.95=18.72+15.33+11.1r equation: 



7.5r-19.95=18.72+15.33+11.1r

We move all terms to the left:

7.5r-19.95-(18.72+15.33+11.1r)=0

We add all the numbers together, and all the variables

7.5r-(11.1r+34.05)-19.95=0

We get rid of parentheses

7.5r-11.1r-34.05-19.95=0

We add all the numbers together, and all the variables

-3.6r-54=0

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

-3.6r=54

r=54/-3.6

r=-15

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