2f-9=11

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Solution for 2f-9=11 equation: 



2f-9=11

We move all terms to the left:

2f-9-(11)=0

We add all the numbers together, and all the variables

2f-20=0

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

2f=20

f=20/2

f=10

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