Solutions by everydaycalculation.com
720 - 45 is -920.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-4/5 7/20-8/5 7/40-4/5 7/20-4/10 21/20-4/5 7/20-12/5 7/60-4/5 7/20-4/15 35/20-4/5 7/20-20/5 7/20-4/25 49/20-4/5 7/20-28/5 7/20-4/35
© everydaycalculation.com