10+0.08r=20+0.4r

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Solution for 10+0.08r=20+0.4r equation: 



10+0.08r=20+0.4r

We move all terms to the left:

10+0.08r-(20+0.4r)=0

We add all the numbers together, and all the variables

0.08r-(0.4r+20)+10=0

We get rid of parentheses

0.08r-0.4r-20+10=0

We add all the numbers together, and all the variables

-0.32r-10=0

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

-0.32r=10

r=10/-0.32

r=-31+0.08/0.32

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