18f+19=20f-9

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Solution for 18f+19=20f-9 equation: 



18f+19=20f-9

We move all terms to the left:

18f+19-(20f-9)=0

We get rid of parentheses

18f-20f+9+19=0

We add all the numbers together, and all the variables

-2f+28=0

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

-2f=-28

f=-28/-2

f=+14

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