50=8r-30

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Solution for 50=8r-30 equation: 



50=8r-30

We move all terms to the left:

50-(8r-30)=0

We get rid of parentheses

-8r+30+50=0

We add all the numbers together, and all the variables

-8r+80=0

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

-8r=-80

r=-80/-8

r=+10

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