r+7.8=8r+5

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Solution for r+7.8=8r+5 equation: 



r+7.8=8r+5

We move all terms to the left:

r+7.8-(8r+5)=0

We get rid of parentheses

r-8r-5+7.8=0

We add all the numbers together, and all the variables

-7r+2.8=0

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

-7r=-2.8

r=-2.8/-7

r=2.8/7

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