Solutions by everydaycalculation.com
921 - 621 is 17.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21-6/21 9/21-12/21 9/42-6/21 9/21-6/42 27/21-6/21 9/21-18/21 9/63-6/21 9/21-6/63 45/21-6/21 9/21-30/21 63/21-6/21 9/21-42/21
© everydaycalculation.com