Solutions by everydaycalculation.com
The simplest form of 21423402 is 1727.
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Equivalent fractions: 4284/6804 1071/1701 714/1134 306/486
More fractions: 4284/3402 2142/6804 6426/3402 2143/3402 2142/34032141/3402 2142/3401
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