Solutions by everydaycalculation.com
780 - 180 is 340.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80-1/80 7/80-2/80 21/80-1/80 7/80-3/80 35/80-1/80 7/80-5/80 49/80-1/80 7/80-7/80
© everydaycalculation.com