Let b, c, and f represent the number of blips, cogs, and faves.

2 blips = 9 cogs,

2b = 9c divide both sides by 2

b = 4.5c

and 1/2 blip = 2 cogs + 1 fave

(1/2)b = 2c + f

plug b = 4.5c into the last equation

(1/2)*4.5c = 2c + f

by solving for f we find:

f = 0.25c

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1 fave equals 0.25 or 1/4 of a cog.