Solutions by everydaycalculation.com
1st number: 21/30, 2nd number: 1 10/30
2130 - 4030 is -1930.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/30-40/30 21/30-80/30 21/60-40/30 21/30-40/60 63/30-40/30 21/90-40/30 21/30-40/90
© everydaycalculation.com