80-3r=5r+8

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Solution for 80-3r=5r+8 equation: 



80-3r=5r+8

We move all terms to the left:

80-3r-(5r+8)=0

We get rid of parentheses

-3r-5r-8+80=0

We add all the numbers together, and all the variables

-8r+72=0

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

-8r=-72

r=-72/-8

r=+9

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