Solutions by everydaycalculation.com
840 - 140 is 740.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/40-1/40 8/40-2/40 8/80-1/40 8/40-1/80 24/40-1/40 8/40-3/40 8/40-5/40 56/40-1/40 8/40-7/40
© everydaycalculation.com