8f=5f+81

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Solution for 8f=5f+81 equation: 



8f=5f+81

We move all terms to the left:

8f-(5f+81)=0

We get rid of parentheses

8f-5f-81=0

We add all the numbers together, and all the variables

3f-81=0

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

3f=81

f=81/3

f=27

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