Solutions by everydaycalculation.com
520 - 710 is -920.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-7/10 5/20-14/10 5/40-7/10 5/20-7/20 15/20-7/10 5/20-21/10 5/60-7/10 5/20-7/30 25/20-7/10 5/20-35/10 5/20-7/50 35/20-7/10 5/20-49/10 5/20-7/70
© everydaycalculation.com