Solutions by everydaycalculation.com
1820 - 120 is 1720.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-1/20 18/20-2/20 18/40-1/20 18/20-1/40 54/20-1/20 18/20-3/20 18/60-1/20 18/20-1/60 90/20-1/20 18/20-5/20 18/20-7/20
© everydaycalculation.com