Solutions by everydaycalculation.com
1021 - 221 is 821.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-2/21 10/21-4/21 10/42-2/21 10/21-2/42 30/21-2/21 10/21-6/21 10/63-2/21 10/21-2/63 50/21-2/21 10/21-10/21 70/21-2/21 10/21-14/21
© everydaycalculation.com