Solutions by everydaycalculation.com
The simplest form of 21721 is 313.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Equivalent fractions: 434/42 651/63 1085/105 1519/147 31/3
More fractions: 434/21 217/42 651/21 217/63 218/21 217/22216/21 217/20
© everydaycalculation.com