Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 3/9 of 4/12?"
39 × 412 is 19.
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Related: 6/9×4/12 3/9×8/12 3/18×4/12 3/9×4/24 3/27×4/12 3/9×4/36 15/9×4/12 3/9×20/12 3/45×4/12 3/9×4/60 21/9×4/12 3/9×28/12 3/63×4/12 3/9×4/84
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