2+8f=9f+9

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Solution for 2+8f=9f+9 equation: 



2+8f=9f+9

We move all terms to the left:

2+8f-(9f+9)=0

We get rid of parentheses

8f-9f-9+2=0

We add all the numbers together, and all the variables

-1f-7=0

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

-f=7

f=7/-1

f=-7

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