5X/6Y=5/ 10 This is because the five vertices of each black pentagon correspond to the ten vertices of five hexagons, while the corresponding vertices of each pentagon are not duplicated with other vertices, and all vertices of all hexagons correspond to the vertices of borderless shapes.
Simultaneous two equations can solve x = 20 and y = 12.
X and y should be variables and those numbers are constants.
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I'm dizzy! Light means it. . .
Then modify the second formula above, y=5x/3, where x and y are variables and numbers are constants.