[∛(3375/19683 )- ∛(125/1728 ) ] ÷ ∛(64/729) = ? - 3/8
(15/27- 5/12) × 9/4 = ? - 3/8 ((60-45)/108) × 9/4 = ? - 3/8 15/108 × 9/4 = ? - 3/8 5/16 = ? - 3/8 ? = 5/16 + 3/8 ? = 11/16
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