81f=63/9

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Solution for 81f=63/9 equation: 



81f=63/9

We move all terms to the left:

81f-(63/9)=0

We add all the numbers together, and all the variables

81f-7=0

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

81f=7

f=7/81

f=7/81

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