9(f+3)=81

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Solution for 9(f+3)=81 equation: 



9(f+3)=81

We move all terms to the left:

9(f+3)-(81)=0

We multiply parentheses

9f+27-81=0

We add all the numbers together, and all the variables

9f-54=0

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

9f=54

f=54/9

f=6

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