Solutions by everydaycalculation.com
1st number: 5/21, 2nd number: 5 5/7
521 - 407 is -11521.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21-40/7 5/21-80/7 5/42-40/7 5/21-40/14 15/21-40/7 5/63-40/7 5/21-40/21 25/21-40/7 5/21-40/35 35/21-40/7 5/21-40/49
© everydaycalculation.com