Solutions by everydaycalculation.com
220 - 420 is -110.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/20-4/20 2/20-8/20 2/40-4/20 2/20-4/40 6/20-4/20 2/20-12/20 2/60-4/20 2/20-4/60 10/20-4/20 14/20-4/20 2/20-28/20
© everydaycalculation.com