2f+1=3f+9

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Solution for 2f+1=3f+9 equation: 



2f+1=3f+9

We move all terms to the left:

2f+1-(3f+9)=0

We get rid of parentheses

2f-3f-9+1=0

We add all the numbers together, and all the variables

-1f-8=0

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

-f=8

f=8/-1

f=-8

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