Solutions by everydaycalculation.com
The simplest form of 21004340 is 1531.
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Equivalent fractions: 4200/8680 1050/2170 420/868 300/620
More fractions: 4200/4340 2100/8680 6300/4340 2101/4340 2100/43412099/4340 2100/4339
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