8(r-80)=72

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Solution for 8(r-80)=72 equation: 



8(r-80)=72

We move all terms to the left:

8(r-80)-(72)=0

We multiply parentheses

8r-640-72=0

We add all the numbers together, and all the variables

8r-712=0

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

8r=712

r=712/8

r=89

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