Solutions by everydaycalculation.com
1821 - 221 is 1621.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21-2/21 18/21-4/21 18/42-2/21 18/21-2/42 54/21-2/21 18/21-6/21 18/63-2/21 18/21-2/63 90/21-2/21 18/21-10/21 18/21-14/21
© everydaycalculation.com