20/f=4

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Solution for 20/f=4 equation: 



20/f=4

We move all terms to the left:

20/f-(4)=0



Domain of the equation: f!=0

f∈R



We multiply all the terms by the denominator


-4*f+20=0

We add all the numbers together, and all the variables

-4f+20=0

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

-4f=-20

f=-20/-4

f=+5

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