3f-7=5f+9

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Solution for 3f-7=5f+9 equation: 



3f-7=5f+9

We move all terms to the left:

3f-7-(5f+9)=0

We get rid of parentheses

3f-5f-9-7=0

We add all the numbers together, and all the variables

-2f-16=0

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

-2f=16

f=16/-2

f=-8

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