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I recently thought of this brain teaser and was thinking that people where would enjoy.
1/2 - 1/4 = 3
1/30 - 2/5 = 7
3/4 - 3/10 = ?Enjoy
1/2 - 1/4 = 3
1/30 - 2/5 = 7
3/4 - 3/10 = ?Enjoy
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