8f+4=20+9f

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Solution for 8f+4=20+9f equation: 



8f+4=20+9f

We move all terms to the left:

8f+4-(20+9f)=0

We add all the numbers together, and all the variables

8f-(9f+20)+4=0

We get rid of parentheses

8f-9f-20+4=0

We add all the numbers together, and all the variables

-1f-16=0

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

-f=16

f=16/-1

f=-16

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