9f+3f-20=16+8f

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Solution for 9f+3f-20=16+8f equation: 



9f+3f-20=16+8f

We move all terms to the left:

9f+3f-20-(16+8f)=0

We add all the numbers together, and all the variables

9f+3f-(8f+16)-20=0

We add all the numbers together, and all the variables

12f-(8f+16)-20=0

We get rid of parentheses

12f-8f-16-20=0

We add all the numbers together, and all the variables

4f-36=0

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

4f=36

f=36/4

f=9

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