Solutions by everydaycalculation.com
1021 - 721 is 17.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-7/21 10/21-14/21 10/42-7/21 10/21-7/42 30/21-7/21 10/63-7/21 10/21-7/63 50/21-7/21 10/21-35/21 70/21-7/21 10/21-49/21
© everydaycalculation.com