Solutions by everydaycalculation.com
1st number: 6/40, 2nd number: 3 3/8
640 - 278 is -12940.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-27/8 6/40-54/8 6/80-27/8 6/40-27/16 18/40-27/8 6/40-81/8 6/40-27/24 30/40-27/8 6/40-27/40 42/40-27/8 6/40-27/56
© everydaycalculation.com