Solutions by everydaycalculation.com
The simplest form of 121521 is 4057.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Equivalent fractions: 2430/42 3645/63 405/7 6075/105 8505/147
More fractions: 2430/21 1215/42 3645/21 1215/63 1216/21 1215/221214/21 1215/20
© everydaycalculation.com