20+19f=f-20+20f

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



20+19f=f-20+20f

We move all terms to the left:

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

We add all the numbers together, and all the variables

19f-(21f-20)+20=0

We get rid of parentheses

19f-21f+20+20=0

We add all the numbers together, and all the variables

-2f+40=0

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

-2f=-40

f=-40/-2

f=+20

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