Solutions by everydaycalculation.com
320 - 820 is -14.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-8/20 3/20-16/20 3/40-8/20 3/20-8/40 9/20-8/20 3/20-24/20 3/60-8/20 3/20-8/60 15/20-8/20 3/20-40/20 21/20-8/20 3/20-56/20
© everydaycalculation.com